共 5 条
[1]
EDGAR W, 1962, JUL S ROYAL SOC HEAL, P1
[2]
MILLAR JD, 1965, J AM HOSPITAL A, V39, P57
[3]
MORRIS L, 1970, AM J PUBLIC HEALTH, V60, P12
[4]
WEINSTEIN I, 1947, AM J PUBLIC HEALTH, V37, P1376
[5]
ZETTERBERG B, 1966, ACTA MED SCANDI S464