Flexible Two-Phase studies for rare exposures: Feasibility, planning and efficiency issues of a new variant
Pascal Wild, Nadine Andrieu, Alisa M Goldstein, Walter SchillТом:
5
Мова:
english
DOI:
10.1186/1742-5573-5-4
Date:
December, 2008
Файл:
PDF, 238 KB
english, 2008