Authors: J A Pérez Arbej; M I Cameo Rico; F Arnáiz Esteban; E Martínez Pérez; M A Nogueras Gimeno; R Espuela Orgaz; V Crespo Mayor Journal: Arch Esp Urol Date: 1997-06 Impact factor: 0.436
Authors: D Moher; P Fortin; A R Jadad; P Jüni; T Klassen; J Le Lorier; A Liberati; K Linde; A Penna Journal: Lancet Date: 1996-02-10 Impact factor: 79.321