共 36 条
[1]
ANDERSON GD, 1986, OBSTETRICS NORMAL PR, P819
[3]
ARMSTRONG BG, 1989, BRIT J IND MED, V46, P196
[4]
BERKOWITZ GS, 1983, J REPROD MED, V28, P581
[5]
EDHOLM OG, 1966, PHYSICAL ACTIVITY HL, P187
[7]
Holmberg P C, 1980, Am J Ind Med, V1, P167, DOI 10.1002/ajim.4700010207
[8]
HOLMBERG PC, 1982, SCAND J WORK ENV HEA, V8, P89