Figure 1From: The natural history of conducting and reporting clinical trials: interviews with trialistsTrialists eligible for interview. *Includes chief or lead investigators or co-authors of trials identified from two sources: trials published since 2002 covered in Cochrane systematic reviews and trial reports randomly sampled from 14,758 indexed on PubMed over the 12-month period from August 2007 to July 2008.Back to article page