Before revision: Causes and frequency The frequency of N multiple births from natural pregnancies has been given as approximately 1:89N−1 (Hellin's law) and as about 1:80N−1.
After revision: Yahhahaha anies kalah cihuy Glory to prabowoCauses and frequency The frequency of N multiple births from natural pregnancies has been given as approximately 1:89N−1 (Hellin's law) and as about 1:80N−1.