Journal Articles - 1999 Yang G, Lixin F, Tan J, Guoming Q, Zhang Y, Samet JM, et al. . Journal of the American Medical Association 282(13):1247-1253 (1999). Follow Us on Social Media 2025202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998
