7Young T, Palta M, Dempsey J, et al. The occurrence of sleepdisordered breathing among middle-aged adults. N Engl J Med, 1993,328 : 1230-1235.
8Ip MS, Lam B, Lauder I J, et al. A community study of sleepdisordered breathing in middle-aged Chinese men in Hong Kong. Chest, 2001,119: 62-69.
9Ip MS, Lam B, Tang LC, et al. A community study of sleep- disordered breathing in middle-aged Chinese women in Hong Kong: prevalence and gender differences. Chest, 2004,125 : 127- 134.
10Kamil MA, Teng CL, Hassan SA. Snoring and breathing pauses during sleep in the Malaysian population. Respirology, 2007,12 : 375-380.