Prokopyuk, O. S., O. V. Lipina, and I. B. Musatova. 2008. “About Clinical Efficiency of Cryopreserved Human Cord Blood Serum”. Problems of Cryobiology and Cryomedicine 18 (4):535-37. https://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/371.