Koga, A., Toda, K., Tatsushima, K., Matsuubayashi, S., Tamura, N., Imamura, M., & Kawai, K. (2019). Portal hypertension in prolonged anorexia nervosa with laxative abuse: A case report of three patients. The International Journal of Eating Disorders, 52(2), 211-215. https://doi.org/10.1002/eat.23007

Koga, A., Murakami, M., Kurihra, Y., Ishida, T., Hosokawa, M., Tamura, N., … Kawai, K. (2020). Portal hypertension in prolonged anorexia nervosa with laxative abuse: a case report with liver and kidney biopsy data. Eating and Weight Disorders : EWD. https://doi.org/10.1007/s40519-020-00902-x (Original work published 2020)