Authors: P Kropp; B Meyer; T Dresler; G Fritsche; C Gaul; U Niederberger; S Förderreuther; V Malzacher; T P Jürgens; M Marziniak; A Straube Journal: Schmerz Date: 2017-10 Impact factor: 1.107
Authors: W E Pryse-Phillips; D W Dodick; J G Edmeads; M J Gawel; R F Nelson; R A Purdy; G Robinson; D Stirling; I Worthington Journal: CMAJ Date: 1998-07-14 Impact factor: 8.262