The why, the how and the when of PGS 2.0: current practices and expert opinions of fertility specialists, molecular biologists, and embryologists by Sermon, K, Capalbo, A, Cohen, J, Coonen, E, De Rycke, M, De Vos, A, Delhanty, J, Fiorentino, F, Gleicher, N, Griesinger, G, Grifo, J, Handyside, A, Harper, J, Kokkali, G, Mastenbroek, S, Meldrum, D, Meseguer, M, Montag, M, Munné, S, Rienzi, L, Rubio, C, Scott, K, Scott, R, Simon, C, Swain, J, Treff, N, Ubaldi, F, Vassena, R, Vermeesch, JR, Verpoest, W, Wells, D, Geraedts, J