共 55 条
[3]
Byers E. S., 2001, NEW BRUNSWICK STUDEN
[4]
Centers for Disease Control, 2000, TRACK HIDD EPID TREN
[5]
Centers for Disease Control and Prevention, 2000, MWMR, V49, P27
[6]
Centers for Disease Control and Prevention, 1998, MMWR-MORBID MORTAL W, V45, pSS4
[8]
Cline RJ Welch, 1992, HEALTH COMMUN, V4, P39, DOI DOI 10.1207/S15327027HC0401_4