Hladkykh, Fedir Vol. “Experimental Study of the Antiulcer Effect of Cryopreserved Placenta Extract on a Model of Acetylsalicylic Acid-Induced Ulcerogenesis”. Current Issues in Pharmacy and Medical Sciences, vol. 35, no. 2, Aug. 2022, pp. 89-94, https://doi.org/10.2478/cipms-2022-0017.