
Keywords: AZF(a)(b)(c); azoospermia factor (a) (b) (c); (O)FNA; (open) fine-needle aspiration; ICSI; intracytoplasmic sperm injection; IVF; in vitro fertilisation; MeSH; medical subject heading; NAB; needle aspiration biopsy;; (N)OA; (non-)obstructive azoospermia;