Received May 6, 2002; revision received Aug. 6. 2002; accepted Oct. 8, 2002. From the Department of Psychiatry, University of Bristol; and the Department of Psychiatry, University of Ioannina School of Medicine, Ioannina, Greece. Address reprint requests to Dr. Petros Skapinakis, Department of Psychiatry, University of Bristol, Cotham House, Cotham Hill, Bristol BS6 6JL, U.K.; email@example.com (e-mail). This study was begun while Dr. Skapinakis was studying for a Ph.D. at the University of Wales College of Medicine and was funded by the Alexander S. Onassis Public Benefit Foundation. The authors thank Professor Simon Wessely and Dr. Gregory Simon for their comments on a draft of the article. Data reported in this article were collected as part of the World Health Organization Collaborative Project on Psychological Problems in General Health Care. Participating investigators include O. Ozturk and M. Rezaki, Ankara, Turkey; C. Stefanis, Athens, Greece; S.M. Channabasavana and T.G. Sriram, Bangalore, India; H. Helmchen and M. Linden, Berlin; W. van der Brink and B. Tiemens, Groningen, the Netherlands; M. Olatawura and O. Gureye, Ibadan, Nigeria; O. Benkert and W. Maier, Mainz, Germany; R. Gater and S. Kisely, Manchester, U.K.; Y. Nakane and S. Michitsuji, Nagasaki, Japan; Y. Lecrubier and P. Boyer, Paris; J. Costa e Silva and L. Villano, Rio de Janeiro; R. Florenzano and J. Acuna, Santiago, Chile; G.E. Simon and M. von Korff, Seattle; Y. He-Quin and X. Shi Fu, Shanghai; and M. Tansella and C. Bellantuono, Verona, Italy. The study advisory group includes J. Costa e Silva, D.P. Goldberg, Y. Lecrubier, M. vonKorff, and H-U Wittchen. Coordinating staff at World Health Organization headquarters includes N. Sartorius and T.B. Ustun.