Fitzpatrick Annette L, Steinman Lesley E, Tu Shin-Ping, Ly Kiet A, Ton Thanh G N, Yip Mei-Po, Sin Mo-Kyung
Department of Epidemiology, University of Washington, Collaborative Health Studies Coordinating Center, Building 29, Suite 310, 6200 NE 74th Street, Seattle, WA 98115, USA.
Am J Public Health. 2009 Dec;99(12):2147-9. doi: 10.2105/AJPH.2009.172320.