Prokopyuk, O. S., O. V. Lipina, and I. B. Musatova. “About Clinical Efficiency of Cryopreserved Human Cord Blood Serum”. Problems of Cryobiology and Cryomedicine, vol. 18, no. 4, Dec. 2008, pp. 535-7, https://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/371.