共 41 条
[5]
*CDCP, 2003, MMWR-MORBID MORTAL W, V52, P329
[6]
Centers for Disease Control and Prevention (CDC), 2003, MMWR Recomm Rep, V52, P1
[7]
Centers for Disease Control and Prevention (CDC), 2001, MMWR Morb Mortal Wkly Rep, V50, P117
[10]
Cummings SM, 2001, HEALTH SERV RES, V35, P1347