1.
Selenge B, Tsagaankhuu S, Boldbaatar D. Principles of Research Methodology A Guide for Clinical Investigators. Cent. Asian j. Med. Sci. [Internet]. 2023 Mar. 30 [cited 2024 Nov. 21];9(1):62-3. Available from: https://mongoliajol.info/index.php/CAJMS/article/view/3112