共 5 条
[1]
COOK CD, 1960, PEDIATRICS, V26, P570
[3]
LEONHARDT T, 1964, ACTA MED SCAND S416
[4]
MERRELL M, 1955, J Chronic Dis, V1, P12, DOI 10.1016/0021-9681(55)90018-7
[5]
1964, STATISTISK ARSBOK SV