W J Serfontein

Stability of pyridoxal-5-phosphate semicarbazone: Applications in plasma vitamin B6 analysis and population surveys of vitamin B6 nutritional status

Job Ubbink, W J Serfontein, L S de Villiers · Journal of Chromatography B Biomedical Sciences and Applications · 1985 · 161 citations

Vitamin Nutrition, Nutrition, Nutrient Bioavailability +11

Bismuth toxicity in man II. Review of bismuth blood and urine levels in patients after administration of therapeutic bismuth formulations in relation to the problem of bismuth toxicity in man.

W J Serfontein, R. C. P. M. Mekel · PubMed · 1979 · 59 citations

Medicinal Chemistry, Urology, Bismuth Toxicity +13

Plasma pyridoxal-5-phosphate level as risk index for coronary artery disease

W J Serfontein, Job Ubbink, L S de Villiers et al. · Atherosclerosis · 1985 · 43 citations

Vascular Disease, Cardiovascular Disease, Medicine +10

Effect of different levels of oral pyridoxine supplementation on plasma pyridoxal-5′-phosphate and pyridoxal levels and urinary vitamin B-6 excretion

Job Ubbink, W J Serfontein, Piet Becker et al. · American Journal of Clinical Nutrition · 1987 · 29 citations · Full text

Vitamin Nutrition, Nutrition, Urology +9

Nitrosamines as environmental carcinogens. II. Evidence for the presence of nitrosamines in tobacco smoke condensate.

W J Serfontein, P Hürter · PubMed · 1966 · 27 citations

Biochemistry, Environmental Carcinogens, Medicine +15