3Bergholz R, Wenke K. Polyorchidism: a recta-analysis [ J ]. J Urol, 2009,182 : 2422-2427.
4Arlen AM, Holzman SA, Weiss AD, et al. Functional supernumerary testis in a child with |esticular torsion and review of polyorchidism[ J ]. Pediatr Surg Int, 2014,30:565-568.