Authors: Steven P Cohen; Michael H Verdolin; Audrey S Chang; Connie Kurihara; Bennie J Morlando; Jianren Mao Journal: J Pain Date: 2006-06 Impact factor: 5.820
Authors: D I Abrams; C A Jay; S B Shade; H Vizoso; H Reda; S Press; M E Kelly; M C Rowbotham; K L Petersen Journal: Neurology Date: 2007-02-13 Impact factor: 9.910
Authors: John Zajicek; Patrick Fox; Hilary Sanders; David Wright; Jane Vickery; Andrew Nunn; Alan Thompson Journal: Lancet Date: 2003-11-08 Impact factor: 79.321