For citations:
Rumyantsev P.O., Saenko V.A., Rumyantseva U.V., Chekin S.Yu. Statistical methods for the analyses in clinical practice. Part 2. Survival analysis and multivariate statistics. Problems of Endocrinology. 2009;55(6):48-56. (In Russ.) https://doi.org/10.14341/probl200955648-56

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