title: Letter: Cryptorchidism.
mesh_terms: D000367:Age Factors; D001706:Biopsy; D002648:Child; D003456:Cryptorchidism / Q000235:genetics / Q000473:pathology*; D006801:Humans; D008297:Male; D013091:Spermatogenesis; D013737:Testis / Q000473:pathology*