New England Journal of Medicine
Volume 356:29-38 January 4, 2007 Number 1
Dopamine Agonists and the Risk of Cardiac-Valve Regurgitation
René Schade, M.D., Frank Andersohn, M.D., Samy Suissa, Ph.D., Wilhelm Haverkamp, M.D., Ph.D., and Edeltraut Garbe, M.D., Ph.D.
http://content.nejm.org/cgi/content/short/356/1/29