共 25 条
[2]
Avlund K, 1999, DAN MED BULL, V46, P345
[5]
Cockburn J, 1990, Int Disabil Stud, V12, P169
[6]
Farrow D C, 1990, Epidemiology, V1, P370, DOI 10.1097/00001648-199009000-00006