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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
Lippuner, K; Haenggi, W; Birkhaeuser, M H; Casez, J P; Jaeger, P (1997). Prevention of postmenopausal bone loss using tibolone or conventional peroral or transdermal hormone replacement therapy with 17beta-estradiol and dydrogesterone. Journal of bone and mineral research, 12(5), pp. 806-12. Hoboken, N.J.: Wiley-Blackwell 10.1359/jbmr.1997.12.5.806
Haenggi, W; Casez, J P; Birkhaeuser, M H; Lippuner, K; Jaeger, P (1994). Bone mineral density in young women with long-standing amenorrhea: limited effect of hormone replacement therapy with ethinylestradiol and desogestrel. Osteoporosis international, 4(2), pp. 99-103. London: Springer 10.1007/BF01623232
