TY - RPRT TI - Sperm retrieval for obstructive azoospermia. AU - Practice Committee of the American Society for Reproductive Medicine PY - 2006 DO - 10.1016/j.fertnstert.2006.07.1490 UR - https://pubmed.ncbi.nlm.nih.gov/17055803/ ID - 17055803 ER -