Monozygotic twinning after assisted reproductive technologies: A case report of asymmetric development and incidence during 19 years in an international group of in vitro fertilization clinics

1. Tocino, A.
2. Blasco, V.
3. Prados, N.
4. Vargas, M.J.
5. Requena, A.
6. Pellicer, A.
7. Fernández-Sánchez, M.