Author index ============ Abdelrahim Moaz, [935](http://jim.bmj.com/content/69/4/901.full.pdf) Abdelrahim Moaz, [936](http://jim.bmj.com/content/69/4/901.full.pdf) Abdelrehim Moaz, [936](http://jim.bmj.com/content/69/4/901.full.pdf) Abdelrehim Moaz, [937](http://jim.bmj.com/content/69/4/901.full.pdf) Abudalou Mohammad, [935](http://jim.bmj.com/content/69/4/901.full.pdf) Abudalou Mohammad, [936](http://jim.bmj.com/content/69/4/901.full.pdf) Abudalou Mohammad, [936](http://jim.bmj.com/content/69/4/901.full.pdf) Abudalou Mohammad, [937](http://jim.bmj.com/content/69/4/901.full.pdf) Adnani Harsha, [920](http://jim.bmj.com/content/69/4/901.full.pdf) Agladze Mariam, [915](http://jim.bmj.com/content/69/4/901.full.pdf) Agladze Mariam, [927](http://jim.bmj.com/content/69/4/901.full.pdf) Agladze Mariam, [929](http://jim.bmj.com/content/69/4/901.full.pdf) Agladze Mariam, [930](http://jim.bmj.com/content/69/4/901.full.pdf) Agladze Mariam, [931](http://jim.bmj.com/content/69/4/901.full.pdf) Agrawal Nirav, [920](http://jim.bmj.com/content/69/4/901.full.pdf) Ahmed Kawser, [939](http://jim.bmj.com/content/69/4/901.full.pdf) Aldabagh Mohammad, [903](http://jim.bmj.com/content/69/4/901.full.pdf) Allison Braden, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Alshamam Mohsen, [938](http://jim.bmj.com/content/69/4/901.full.pdf) Altieri Pablo I, [934](http://jim.bmj.com/content/69/4/901.full.pdf) Alvarado Giselle, [903](http://jim.bmj.com/content/69/4/901.full.pdf) Amini Masoud, [929](http://jim.bmj.com/content/69/4/901.full.pdf) Aubee Joseph I, [932](http://jim.bmj.com/content/69/4/901.full.pdf) Awais Omar, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Badaki-Makun Oluwakemi, [910](http://jim.bmj.com/content/69/4/901.full.pdf) Barreto Luis E, [934](http://jim.bmj.com/content/69/4/901.full.pdf) Barrios Roberto, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Bartlett Kathleen W, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Bashir Tayyaba, [915](http://jim.bmj.com/content/69/4/901.full.pdf) Bashir Tayyaba, [931](http://jim.bmj.com/content/69/4/901.full.pdf) Bell Tara, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Bera Rimal, [920](http://jim.bmj.com/content/69/4/901.full.pdf) Berkowitz Deena, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Bertram Amanda, [908](http://jim.bmj.com/content/69/4/901.full.pdf) Bhatti Zamaraq, [930](http://jim.bmj.com/content/69/4/901.full.pdf) Bhuiya Tanzim, [904](http://jim.bmj.com/content/69/4/901.full.pdf) Bhuiyan Sakil A, [915](http://jim.bmj.com/content/69/4/901.full.pdf) Bhuiyan Sakil A, [927](http://jim.bmj.com/content/69/4/901.full.pdf) Bhuiyan Sakil A, [930](http://jim.bmj.com/content/69/4/901.full.pdf) Bisen Yash, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Brantly Mark, [907](http://jim.bmj.com/content/69/4/901.full.pdf) Breslin Kristen, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Brown Collis, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Burrell Aszia, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Burton Steve, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Buttar Chandan, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Carmona Carlos A, [918](http://jim.bmj.com/content/69/4/901.full.pdf) Ceneri Nicolle, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Cervia Joseph S, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Cervia Joseph S, [904](http://jim.bmj.com/content/69/4/901.full.pdf) Cervia Joseph S, [920](http://jim.bmj.com/content/69/4/901.full.pdf) Chaney Hollis, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Chaney Hollis, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Chen Sheena W, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Chhikara Sanya, [908](http://jim.bmj.com/content/69/4/901.full.pdf) Chinchilli Vern, [912](http://jim.bmj.com/content/69/4/901.full.pdf) Choi Yeon Sik, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Chowdhury Nadya, [917](http://jim.bmj.com/content/69/4/901.full.pdf) Christie Ian G, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Christie Neil A, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Chung Howard, [919](http://jim.bmj.com/content/69/4/901.full.pdf) Coca Steven, [912](http://jim.bmj.com/content/69/4/901.full.pdf) Cogen Jonathan, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Conte Madellena A, [904](http://jim.bmj.com/content/69/4/901.full.pdf) Coppola Tiziana, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Crandall Keith, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Crentsil Victor C, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Das Samrat U, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Davis Ellie, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Davison Ashwini, [908](http://jim.bmj.com/content/69/4/901.full.pdf) Dumeny Leanne, [907](http://jim.bmj.com/content/69/4/901.full.pdf) Efimov Igor R, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Efimov Igor R, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Efimova Tatiana, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Eisinger Robert, [907](http://jim.bmj.com/content/69/4/901.full.pdf) Elhance Ajit, [941](http://jim.bmj.com/content/69/4/901.full.pdf) Elsaie Ahmed L, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Ferman Debra, [927](http://jim.bmj.com/content/69/4/901.full.pdf) Fox Eduardo, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Freishtat Robert, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Fuchs Sebastien L, [920](http://jim.bmj.com/content/69/4/901.full.pdf) Futch Hunter, [907](http://jim.bmj.com/content/69/4/901.full.pdf) Gams Anna, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Garg Amit, [912](http://jim.bmj.com/content/69/4/901.full.pdf) Genies Marquita, [910](http://jim.bmj.com/content/69/4/901.full.pdf) George Sharon, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Ghernautan Victoria, [933](http://jim.bmj.com/content/69/4/901.full.pdf) Gillette Brian, [922](http://jim.bmj.com/content/69/4/901.full.pdf) Goldberg Ythan, [903](http://jim.bmj.com/content/69/4/901.full.pdf) Gomolin Irving, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Gondal Anoosh Zafar, [938](http://jim.bmj.com/content/69/4/901.full.pdf) González Briana, [934](http://jim.bmj.com/content/69/4/901.full.pdf) Gooding William E, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Gowda Sharada, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Greenberg Isabella, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Greenberger Joel, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Guest Dolores, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Gunaratne Aruni, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Hahn Andrea, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Hahn Andrea, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Haigh Alexandra M, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Hairston Tai Kyung, [910](http://jim.bmj.com/content/69/4/901.full.pdf) Hamdy Rana, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Hammer Benjamin, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Hijazin Kristin, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Holzwanger Erik, [936](http://jim.bmj.com/content/69/4/901.full.pdf) Holzwanger Erik, [937](http://jim.bmj.com/content/69/4/901.full.pdf) Hsiao Chu, [907](http://jim.bmj.com/content/69/4/901.full.pdf) Hsu Chi-yuan, [912](http://jim.bmj.com/content/69/4/901.full.pdf) Hudson Tamaro, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Idrees Zarwa, [919](http://jim.bmj.com/content/69/4/901.full.pdf) Idrees Zarwa, [939](http://jim.bmj.com/content/69/4/901.full.pdf) Inam Zaina, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Ismail Mohamed F, [908](http://jim.bmj.com/content/69/4/901.full.pdf) Jacobs Anna, [922](http://jim.bmj.com/content/69/4/901.full.pdf) Jain Ruchi, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Jansma Lauren, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Jawadi Sarah, [927](http://jim.bmj.com/content/69/4/901.full.pdf) Jin Lei, [907](http://jim.bmj.com/content/69/4/901.full.pdf) Johannes Stephanie, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Johnstone Brian, [941](http://jim.bmj.com/content/69/4/901.full.pdf) Jonas Elizabeth, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Jones Schuyler, [903](http://jim.bmj.com/content/69/4/901.full.pdf) Kasselman Lora J, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Kaur Navneet, [915](http://jim.bmj.com/content/69/4/901.full.pdf) Kaur Navneet, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Keever Katherine, [926](http://jim.bmj.com/content/69/4/901.full.pdf) Kelley Kathryn, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Kennedy Charles, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Kim Dana, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Kim Yungmin, [919](http://jim.bmj.com/content/69/4/901.full.pdf) Kiss Alexi, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Kizer Jorge, [903](http://jim.bmj.com/content/69/4/901.full.pdf) Klares Richard J, [904](http://jim.bmj.com/content/69/4/901.full.pdf) Kondaveeti Ravali, [933](http://jim.bmj.com/content/69/4/901.full.pdf) Korogodina Anna, [915](http://jim.bmj.com/content/69/4/901.full.pdf) Koumbourlis Anastassios C, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Koumbourlis Anastassios C, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Koutroulis Ioannis, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Kumar Indira, [928](http://jim.bmj.com/content/69/4/901.full.pdf) Kumthekar Anand, [915](http://jim.bmj.com/content/69/4/901.full.pdf) Kurbanova Tamara, [926](http://jim.bmj.com/content/69/4/901.full.pdf) Lakhdar Sofia, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Lam Phillip, [941](http://jim.bmj.com/content/69/4/901.full.pdf) Lester Janice, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Levent Fatma, [918](http://jim.bmj.com/content/69/4/901.full.pdf) Losada Vaniolky, [928](http://jim.bmj.com/content/69/4/901.full.pdf) Luketich James, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Luketich James, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Mader Edward, [928](http://jim.bmj.com/content/69/4/901.full.pdf) Mahjoub Heba, [908](http://jim.bmj.com/content/69/4/901.full.pdf) Majeed Umair, [924](http://jim.bmj.com/content/69/4/901.full.pdf) Markway Brandon, [941](http://jim.bmj.com/content/69/4/901.full.pdf) McLean Heather S, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Menon Renuka, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Miao JH, [934](http://jim.bmj.com/content/69/4/901.full.pdf) Miao JH, [935](http://jim.bmj.com/content/69/4/901.full.pdf) Miao KH, [934](http://jim.bmj.com/content/69/4/901.full.pdf) Miao KH, [935](http://jim.bmj.com/content/69/4/901.full.pdf) Mijares Joseph, [932](http://jim.bmj.com/content/69/4/901.full.pdf) Ming David, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Mnatsakanyan Nelli, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Mohammed Arrianna, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Moledina Dennis, [912](http://jim.bmj.com/content/69/4/901.full.pdf) Morduchowitz Stuart, [929](http://jim.bmj.com/content/69/4/901.full.pdf) Morrison Sephora, [932](http://jim.bmj.com/content/69/4/901.full.pdf) Nader Claudia, [936](http://jim.bmj.com/content/69/4/901.full.pdf) Nadile Victoria, [922](http://jim.bmj.com/content/69/4/901.full.pdf) Napolitano Michael A, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Nasr Isam, [910](http://jim.bmj.com/content/69/4/901.full.pdf) Nouryan Christian, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Novikov Anastasia, [927](http://jim.bmj.com/content/69/4/901.full.pdf) Nso , [902](http://jim.bmj.com/content/69/4/901.full.pdf) Nso , [902](http://jim.bmj.com/content/69/4/901.full.pdf) Nso Nso A, [904](http://jim.bmj.com/content/69/4/901.full.pdf) Nso Nso A, [933](http://jim.bmj.com/content/69/4/901.full.pdf) Nyabera Akwe, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Ogunlesi Folasade, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Olejniczak Piotr, [928](http://jim.bmj.com/content/69/4/901.full.pdf) Ordog Gary J, [927](http://jim.bmj.com/content/69/4/901.full.pdf) Ordog Gary J, [933](http://jim.bmj.com/content/69/4/901.full.pdf) Osman Alaa, [904](http://jim.bmj.com/content/69/4/901.full.pdf) Parikh Chirag, [912](http://jim.bmj.com/content/69/4/901.full.pdf) Patel Shilpa, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Payne Asha, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Pennathur Arjun, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Pennathur Arjun, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Perez Geovanny, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Philpott David, [910](http://jim.bmj.com/content/69/4/901.full.pdf) Photavath Jai P, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Pinkhasov Aaron, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Rahman Zaid, [924](http://jim.bmj.com/content/69/4/901.full.pdf) Ramani Praveen kumar, [939](http://jim.bmj.com/content/69/4/901.full.pdf) Ramani Praveen kumar, [940](http://jim.bmj.com/content/69/4/901.full.pdf) Ramdass Adesh, [926](http://jim.bmj.com/content/69/4/901.full.pdf) Ranat Riki, [917](http://jim.bmj.com/content/69/4/901.full.pdf) Ranat Riki, [930](http://jim.bmj.com/content/69/4/901.full.pdf) Reiss Allison B, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Rios George Vasquez, [912](http://jim.bmj.com/content/69/4/901.full.pdf) Rivera Candido, [924](http://jim.bmj.com/content/69/4/901.full.pdf) Rizzo Vincent, [938](http://jim.bmj.com/content/69/4/901.full.pdf) Rogers John A, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Ryan Leticia, [910](http://jim.bmj.com/content/69/4/901.full.pdf) Sachmechi Issac, [929](http://jim.bmj.com/content/69/4/901.full.pdf) Saliaj Merjona, [916](http://jim.bmj.com/content/69/4/901.full.pdf) Saliaj Merjona, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Sami Iman, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Sami Iman, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Sanders Sara, [940](http://jim.bmj.com/content/69/4/901.full.pdf) Sandu Oana, [903](http://jim.bmj.com/content/69/4/901.full.pdf) Schuchert Matthew, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Sebastian Mathew, [907](http://jim.bmj.com/content/69/4/901.full.pdf) Sedaghati Shawyon, [920](http://jim.bmj.com/content/69/4/901.full.pdf) Seegobin Karan, [924](http://jim.bmj.com/content/69/4/901.full.pdf) Shaban Lilia, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Sharlow Amber, [903](http://jim.bmj.com/content/69/4/901.full.pdf) Shaukat Haroon, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Shenoy Chetan, [908](http://jim.bmj.com/content/69/4/901.full.pdf) Shivanna Binoy, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Shrestha Amrit, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Siddiqui Raheel, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Siddiqui Raheel S, [915](http://jim.bmj.com/content/69/4/901.full.pdf) Siddiqui Raheel S, [916](http://jim.bmj.com/content/69/4/901.full.pdf) Siddiqui Raheel S, [930](http://jim.bmj.com/content/69/4/901.full.pdf) Siddiqui Raheel S, [931](http://jim.bmj.com/content/69/4/901.full.pdf) Siddiqui Raheel S, [937](http://jim.bmj.com/content/69/4/901.full.pdf) Siddiqui Raheel S, [938](http://jim.bmj.com/content/69/4/901.full.pdf) Siew Eddie, [912](http://jim.bmj.com/content/69/4/901.full.pdf) Singh Athwal Pal Satyajit, [908](http://jim.bmj.com/content/69/4/901.full.pdf) Snyder Leah C, [941](http://jim.bmj.com/content/69/4/901.full.pdf) Sobrian Sonya, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Sooy Meredith, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Sozio Stephen M, [908](http://jim.bmj.com/content/69/4/901.full.pdf) Stallwood Christopher G, [935](http://jim.bmj.com/content/69/4/901.full.pdf) Sterrett Emily C, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Sumbly Vikram, [926](http://jim.bmj.com/content/69/4/901.full.pdf) Sumbly Vikram, [930](http://jim.bmj.com/content/69/4/901.full.pdf) Sumbly Vikram, [937](http://jim.bmj.com/content/69/4/901.full.pdf) Sumbly Vikram, [938](http://jim.bmj.com/content/69/4/901.full.pdf) Tall Sakina Ouedraogo, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Tall Sakina Ouedraogo, [904](http://jim.bmj.com/content/69/4/901.full.pdf) Tall Sakina Ouedraogo, [919](http://jim.bmj.com/content/69/4/901.full.pdf) Tas Vildan, [939](http://jim.bmj.com/content/69/4/901.full.pdf) Taylor Haley, [940](http://jim.bmj.com/content/69/4/901.full.pdf) Thomas Leno, [930](http://jim.bmj.com/content/69/4/901.full.pdf) Thomas Michelle, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Thompson Karl M, [932](http://jim.bmj.com/content/69/4/901.full.pdf) Tomuta Nora, [903](http://jim.bmj.com/content/69/4/901.full.pdf) Tracey G O’Brien, [917](http://jim.bmj.com/content/69/4/901.full.pdf) Trachiotis Gregory, [901](http://jim.bmj.com/content/69/4/901.full.pdf) Trachiotis Gregory D, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Trandafirescu Theo D, [917](http://jim.bmj.com/content/69/4/901.full.pdf) Trandafirescu Theo D, [927](http://jim.bmj.com/content/69/4/901.full.pdf) Trandafirescu Theo D, [930](http://jim.bmj.com/content/69/4/901.full.pdf) Trandafirescu Theo D, [933](http://jim.bmj.com/content/69/4/901.full.pdf) Tumarinson Taisiya, [923](http://jim.bmj.com/content/69/4/901.full.pdf) Tumarinson Taisiya, [937](http://jim.bmj.com/content/69/4/901.full.pdf) Varghese Nidhy, [911](http://jim.bmj.com/content/69/4/901.full.pdf) Vasavda Chirag, [908](http://jim.bmj.com/content/69/4/901.full.pdf) Vialet Jaclyn, [920](http://jim.bmj.com/content/69/4/901.full.pdf) Wang Sophia S, [902](http://jim.bmj.com/content/69/4/901.full.pdf) Weekes Kenneth, [941](http://jim.bmj.com/content/69/4/901.full.pdf) White Michelle J, [921](http://jim.bmj.com/content/69/4/901.full.pdf) Wurfel Mark, [912](http://jim.bmj.com/content/69/4/901.full.pdf) Yakes-Jimenez Elizabeth, [905](http://jim.bmj.com/content/69/4/901.full.pdf) Yang Quansan, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Yeddu Hannah, [903](http://jim.bmj.com/content/69/4/901.full.pdf) Yin Rose T, [906](http://jim.bmj.com/content/69/4/901.full.pdf) Yoon Hyun ah, [913](http://jim.bmj.com/content/69/4/901.full.pdf) Zaidi Saher, [920](http://jim.bmj.com/content/69/4/901.full.pdf) Zhang Dongning, [909](http://jim.bmj.com/content/69/4/901.full.pdf) Zhang Meng, [920](http://jim.bmj.com/content/69/4/901.full.pdf) Zheng David D, [919](http://jim.bmj.com/content/69/4/901.full.pdf) Zheng David D, [939](http://jim.bmj.com/content/69/4/901.full.pdf) Ziegfeld Susan, [910](http://jim.bmj.com/content/69/4/901.full.pdf) Zirkiyeva Milana, [915](http://jim.bmj.com/content/69/4/901.full.pdf) Zirkiyeva Milana, [931](http://jim.bmj.com/content/69/4/901.full.pdf)