How to cite this article:
Sellers R, Castillo JC, Ten J, Rodríguez A, Ortiz J, Sellers F, Llácer J, Bernabeu R. Monozygotic twinning following embryo biopsy at the blastocyst stage. JBRA Assist. Reprod. 2021; 25:122-127 doi:10.5935/1518-0557.20200069.