共 9 条
[3]
ALTMANN A, 1948, S Afr J Med Sci, V13, P91
[4]
CONSTABLE BJ, 1958, CLIN SCI, V17, P597
[6]
MacDOUGAL L. G, 1960, TRANS ROY SOC TROP MED AND HYG, V54, P37, DOI 10.1016/0035-9203(60)90210-8
[7]
SCHLESINGER E, 1903, ARCH KINDERHEILKD, V37, P321
[8]
TROWELL HC, 1957, LANCET, V2, P265
[9]
WALT F, 1950, S Afr Med J, V24, P920