Macas, E; Xie, M; Schaufelberger, S; Merki-Feld, G S; Stiller, R; Imthurn, B (2011). Vitrification of human single pronuclear oocytes following two approaches to polar body biopsy. Reproductive BioMedicine Online, 22(4):376-381.
Macas, E; Merki-Feld, G S; Xie, M; Stiller, R; Pelczar, P; Imthurn, B (2008). High survival and developmental rates of vitrified mouse zygotes following polar body biopsy. Reproductive BioMedicine Online, 16(2):271-275.