The Unfinished Task

1. Gottschalk F.A.B. , Beighton P.H. , and Solomon L. : The prevalence of hallux valgus in three South African populations. S. Afr. Med. J., 60:655–656, 1981.

2. Gottschalk F.A.B. , Sallis J.G. , Beighton P.H. , and Solomon L. : A comparison of the prevalence of hallux valgus in three South African populations. S. Afr. Med. J., 57:355–357, 1980.