References
- Eurkitt DP. Br Med J 1973; 1: 274
- Trowell HC. Non Infective disease in Africa London. Arnold. 19613
- de Rocha-Afodu J, Tai Adesola AO. Nig Med J 1971; 1: 47–51
- Ogunbiyi TAJW. Afr J Surg 1977; 2
- Central Bank of Nigeria - Annual Reports. 1970–1979
- Motson RW, Way LW. in Clinical Surgery international. The billiary tract, New York, ChurchiH livingstone 19823
- Bouchier IAD. Proc Roy Soc Med 1977; 70: 597–599
- Holland C, Heaton KW. Br Med J 1972; iii: 672
- Bateson MC, Bouchier IAD. Br Med J 1975; iv: 427–430
- Leissner KH, Wedel H, Sherston T. Scand J Gastroenterol 1977; 12: 893–6
- Boston Collaborative Drug Surveillance Programme Lancet 1973; 1: 1399–404
- Vessey M, Doll R, Peto R, et al. J Bio Soc Sci 1976; 8: 373–427
- Onifade A. Nig Med J 1973; 3: 40–43
- Nagase M, Hikass Y, Tanimura H, Setoyama M., Kamato T, Mukaihara S, Maniyama K. Gastroenterologia Japanica 1979; 14: 40–47