RT Journal Article SR Electronic T1 ANCILLARY STUDIES IN CLINICAL TRIALS (R01): RFA-HL-12-012 JF Journal of Investigative Medicine JO J Investig Med FD BMJ Publishing Group Ltd SP 668 OP 675 DO 10.2310/JIM.0b013e318214f1c1 VO 59 IS 4 YR 2011 UL http://hw-f5-jim.highwire.org/content/59/4/668.abstract AB