@article{Ombelet2006, author = {Ombelet, Willem and Martens, Guy and De Sutter, Petra and Gerris, Jan and Bosmans, Eugene and Ruyssinck, Gunther and Defoort, Paul and Molenberghs, Geert and Gyselaers, Wilfried}, title= {Perinatal outcome of 12 021 singleton and 3108 twin births after non-IVF-assisted reproduction: a cohort study}, year = {2006}, doi = {10.1093/humrep/dei419}, journal = {Human Reproduction}, volume = {21}, number = {4}, pages = {1025--1032}, }