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Principles of mammalian fertilization.
Küpker W, Diedrich K, Edwards RG. Küpker W, et al. Hum Reprod. 1998 Apr;13 Suppl 1:20-32. doi: 10.1093/humrep/13.suppl_1.20. Hum Reprod. 1998. PMID: 9663767 Review.
Pregnancies achieved after frozen-thawed pronuclear oocytes obtained by intracytoplasmic sperm injection with spermatozoa extracted from frozen-thawed testicular tissues from non-obstructive azoospermic men.
Al-Hasani S, Demirel LC, Schöpper B, Bals-Pratsch M, Nikolettos N, Küpker W, Ugur M, Sturm R, Diedrich K. Al-Hasani S, et al. Among authors: kupker w. Hum Reprod. 1999 Aug;14(8):2031-5. doi: 10.1093/humrep/14.8.2031. Hum Reprod. 1999. PMID: 10438422
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