Dohle, G.R.

sperm patient vas deferens azoospermia obstruction mutation infertility testicular abnormality pregnancy cbavd procedure deferen midline prostatic cyst intracytoplasmic sperm injection epididymal fibrosis result semen absence treatment factor prostatic ejaculatory ejaculatory ducts spermatozoa oligozoospermia couple volume chromosome biopsy study microsurgical injection midline ejaculatory duct obstruction reprod retrieval analysis tract transurethral aspiration technique chloride epididymi spermatogenesi testicular biopsy sperm retrieval diagnosis cftr gene mutation intracytoplasmic cause function chloride excretion infection partner history doble testicular sperm extraction deletion quality vasectomy icsi procedure scrotal oocyte motility urology syndrome pregnancy rate region hypogonadism table weber testicular failure failure semen analysis surgery risk factors reversal varicocele