Hatzipantelis, E., I. Kyriakidis, E. Pavlou, and E. Pavlidou. “Bilateral Eyelid Ptosis, Attributed to Vincristine, Treated Successfully With Pyridoxine and Thiamine in a Child With Acute Lymphoblastic Leukemia”. Toxicology International, vol. 22, no. 1, Apr. 2015, pp. 162-4, https://www.informaticsjournals.com/index.php/toxi/article/view/20330.