共 6 条
[1]
*BUR CENS, 1992, POP PROJ US AG SEX R, P25
[2]
MILLER RH, 1993, LARYNGOSCOPE, V103, P750
[3]
MILLER RH, 1994, ARCH OTOLARYNGOL, V120, P1057
[4]
SINGH G, 1995, AM J PUBLIC HEALTH, V85, P1957
[5]
*US DHHS, GMENAC SUMM REP
[6]
1991, STAT DATA US, P13