Should cryopreserved epididymal or testicular sperm be recovered from obstructive azoospermic men for ICSI?

Abstract

Cryopreserved epididymal and testicular sperm, from men with obstructive azoospermia, appear equally effective in ICSI. Epididymal recovery should remain the method of first choice for obstructive azoospermic men but further study of sperm DNA damage rates in different testicular sites is required.