For citations:
Fitilev S.B., Vozzhaev A.V., Shkrebniova I.I., Kliuev D.A. The problem of over-volunteering in early phase clinical trials. Kachestvennaya Klinicheskaya Praktika = Good Clinical Practice. 2018;(2):58-63. (In Russ.) https://doi.org/10.24411/2588-0519-2018-10045