1. Card WI, Good IJ. In: Passmore R, Robson JS, eds. A logical analysis of medicine in companion to medical studies. Vol 3. Edinburgh: Blackwell, 1974.
2. This is the first of three papers in this series,1980
3. Iron "overload" in the South African Bantu;Walker, A.R.P.; Arvidsson, U.B.;Trans R Soc Trop Med Hyg,1953
4. The plantar reflex. A historical clinical and electromyographic study;J, Van Gijn;Krips Repro-Meppel,1977