Source:
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde [S Afr Med J] 1977 May 07; Vol. 51 (19), pp. 684-6.Publisher: South African Medical Association Country of Publication: South Africa NLM ID: 0404520 Publication Model: Print Cited Medium: Print ISSN:
Source:
Canadian journal of public health = Revue canadienne de sante publique [Can J Public Health] 1971 Jan-Feb; Vol. 62 (1), pp. 1-4.Publisher: Springer Nature Country of Publication: Switzerland NLM ID: 0372714 Publication Model: Print Cited Medium: Print ISSN: 0008-4263
Source:
South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde [S Afr Med J] 1972 Dec 16; Vol. 46 (50), pp. 1982-8.Publisher: South African Medical Association Country of Publication: South Africa NLM ID: 0404520 Publication Model: Print Cited Medium: Print ISSN: