of journal "Morphologia", E. office. “USMLE Step 1 Lecture Notes 2020: 7-Book Set (Kaplan Test Prep) Author: Kaplan Medical”. Морфологія / Morphologia / Morfologìâ, vol. 14, no. 1, Mar. 2020, p. 70, doi:10.26641/1997-9665.2020.1.70.