title: A new concept for active ureteric occlusion during percutaneous nephrolithotripsy: the 'counter-flow' principle.
authors.affiliation: Urological Department, Semmelweis University, Budapest, Hungary. berci@urol.sote.hu
authors.forename: S
authors.initials: S
authors.lastname: Lovász
authors.forename: P
authors.initials: P
authors.lastname: Nyirády
authors.forename: I
authors.initials: I
authors.lastname: Romics
mesh_terms: D003250:Constriction; D006801:Humans; D007669:Kidney Calculi / Q000628:therapy*; D008096:Lithotripsy / Q000379:methods*; D009403:Nephrostomy, Percutaneous / Q000379:methods*; D014513:Ureter