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Koeferl Puorger, U P S; Buergin, M; Wunder, D; Crazzolara, S; Birkhaeuser, M H (2006). Surplus embryos in Switzerland in 2003: legislation and availability of human embryos for research. Reproductive biomedicine online, 13(6), pp. 772-7. Oxford: Elsevier 10.1016/S1472-6483(10)61023-1
