P. E. Ratmanov, S. Lotysz, and J. Czajewski, “Polish physicians in Harbin (the first half of the 20th century)”, HOM, vol. 6, no. 1, Feb. 2019, Accessed: Jan. 22, 2025. [Online]. Available: https://historymedjournal.com/HOM/index.php/medicine/article/view/236