The drug maker Merck drafted dozens of research studies for a best-selling drug, then lined up prestigious doctors to put their names on the reports before publication, according to an article to be published Wednesday in a leading medical journal. The article, based on documents unearthed in lawsuits over the pain drug Vioxx, provides a rare, detailed look in the industry practice of ghostwriting medical research studies that are then published in academic journals.

The article cited one draft of a Vioxx research study that was still in want of a big-name researcher, identifying the lead writer only as "External author?" Vioxx was a best-selling drug before Merck took it off the market in 2004 over evidence linking it to heart attacks. Last fall, the company agreed to a $4.85 billion settlement to resolve tens of thousands of lawsuits filed by former Vioxx patients or their families. The lead author of Wednesday's article, Dr. Joseph Ross of the Mount Sinai School of Medicine in New York, said a close look at the Merck documents raised broad questions about the validity of much of the drug industry's published research, because the ghostwriting practice appears to be widespread.

"It almost calls into question all legitimate research that's been conducted by the pharmaceutical industry with the academic physician," said Ross, whose article, written with colleagues, was published Wednesday in JAMA, The Journal of the American Medical Association, and posted Tuesday on the journal's Web site. Merck acknowledged Tuesday that it sometimes hired outside medical writers to draft research reports before handing them over to the doctors whose names eventually appear on the publication.