For citations:

Shreder O.V., Goryachev D.V., Merkulov V.A. Basic Principles for Calculating the Required Number of Participants in Clinical Trials. Part 1. Common Approaches (Review). Regulatory Research and Medicine Evaluation. 2024;14(3):338-350. (In Russ.) https://doi.org/10.30895/1991-2919-2024-14-3-338-350