HAMFELT , Arne. A Simplified Method for Determination of Pyridoxal Phosphate in Biological Samples. Upsala Journal of Medical Sciences, [S. l.], v. 91, n. 1, p. 105–109, 1986. DOI: 10.3109/03009738609178496. Disponível em: https://ujms.net/index.php/ujms/article/view/6964. Acesso em: 10 nov. 2026.