1. BASU, T.K.: Significance of vitamins in cancer. Oncology 33: 183–187 (1976)
2. BELL, E.D.; BULBROOK, R.D.; HAYWARD, J.L.; TONG, D.: Tryptophan metabolism and recurrence rates of patients with breast cancer after mastectomy. Acta vitamin, enzymol. 29: 104–107 (1975)
3. BEREZIN, M.: Vitamins and diabetes mellitus. Diabetologia 10: 380 (1974)
4. BROWN, R.R.; PRICE, J.M.; FRIEDELL, G.H.; BURNEY, S.W.: Tryptophan metabolism in patients with bladder cancer: Geographical differences. J.Nat.Cancer Inst. 43: 295–301 (1969)
5. BYAR, H.L.; BLACKARD, C.: Comparisons of placebo, pyrido- xine, and topical thiotepa in preventing recurrence of stage I bladder cancer. Urology 10: 556–561 (1977)