共 12 条
[1]
AITKEN AB, 1933, W AFR MED J, V6, P63
[2]
COOKE L, 1958, LANCET, V1, P754
[6]
KONSTAM PG, 1954, LANCET, V2, P1039
[8]
PELLEGRINO P, 1959, COMMUNICATION
[10]
SAMUEL S, 1952, S AFR MED J, V26, P121