The interferon gamma gene polymorphism +874 A/T is associated with severe acute respiratory syndrome. - Wai Po Chong; Ip, WK Eddie; Hoi Wan Tso, Gloria; Wai Ng, Man; Hing Sang Wong, Wilfred; Ka Wai Law, Helen; Yung, Raymond WH; Chow, Eudora Y; Au, KL; Chan, Eric YT; Lim, Wilina; Peiris, JS Malik; et al. (BMC Infectious Diseases, 2006)