For citations:

Shreder O.V., Goryachev D.V., Merkulov V.A. Basic Principles for Calculating the Required Number of Participants in Clinical Trials. Part 2. Survival Analysis (Review). Regulatory Research and Medicine Evaluation. 2025;15(1):92-104. (In Russ.) https://doi.org/10.30895/1991-2919-2025-15-1-92-104