Milovanov, Svyatoslav. “An Advances Study Approach to Calculation of Proposed Recruitment by Clinical Sites on Stage of Feasibility to Clinical Trial of II – III Phases”. Issues and Development in Health Research Vol. 4 (August 21, 2021): 119–135. Accessed June 3, 2026. https://stm.bookpi.org/IDHR-V4/article/view/3382.