Pregnancy with sperm aspiration from the proximal head of the epididymis: A new treatment for congenital absence of the vas deferens von Silber, Sherman J., Balmaceda, Jose, Borrero, Claudia, Ord, Terri, Asch, Ricardo

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Penetration of zona-free hamster oocytes using human sperm aspirated from the epididymis of men with congenital absence of the vas deferens: comparison with human in vitro fertiliz... von Rojas, Francisco J., La, Anh-Tuan, Ord, Terri, Patrizio, Pasquale, Balmaceda, Jose P., Silber, Sherman J., Asch, Richardo H.

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The importance of egg and sperm factors in predicting the likelihood of pregnancy from gamete intrafallopian transfer von Guzick, David S., Balmaceda, Jose P., Ord, Terri, Asch, Ricardo H.

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