共 16 条
[1]
[Anonymous], 1988, LANCET, V1, P624
[3]
JEPSON ME, 1976, LANCET, V2, P425
[4]
KIRKMAN R J E, 1981, British Journal of Family Planning, V7, P20
[5]
KURINIJ N, 1988, PEDIATRICS, V81, P365
[6]
MADDEN RB, 1987, J PUBLIC HLTH POLICY, V8, P531
[7]
Madlon-Kay D J, 1988, Fam Med, V20, P220
[8]
MADLONKAY DJ, 1988, FAM MED, V20, P224
[9]
MARTINEZ GA, 1985, PEDIATRICS, V76, P1004
[10]
POTRYKUS C, 1989, HLTH VISITOR, V62, P139