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2. Microsurgical epididymal sperm aspiration versus epididymal micropuncture with perivascular nerve stimulation for intracytoplasmic sperm injection to treat unreconstructable obstructive azoospermia;Yamamoto;Archives of Andrology,1996
3. Testicular sperm extraction through multiple testicular biopsies versus single biopsy in functional azoospermia and the predictive value of May-Grunwald-Giemsa stain for semen;Amer,1999
4. Comparative study of testicular sperm retrieval between the open biopsy method and the needle aspiration technique in azoospermic patients;Atassi;Middle East Fertility Society Journal,2000
5. The use of epididymal versus testicular spermatozoa for ICSI on sibling oocytes: a prospective, randomized study in azoospermic patients with normal spermatogenesis;Croo;Human Reproduction. Abstracts of the 16th Annual Meeting of ESHRE, Bologna, Italy