Effects of bilirubin photoisomers on the measurement of direct bilirubin by the bilirubin oxidase method Okada, H.; Kawada, K.; Itoh, S.; Ozaki, M.; Kakutani, I.; Arai, T.; Koyano, K.; Yasuda, S.; Iwase, T.; Murao, K.; Kusaka, T. Annals of Clinical Biochemistry 55(2): 276-280 2018 1758-1001 10.1177/0004563217716474 https://eurekamag.com/research/059/657/059657473.php