Authors: J Bott; M P Carroll; J H Conway; S E Keilty; E M Ward; A M Brown; E A Paul; M W Elliott; R C Godfrey; J A Wedzicha; J Moxham Journal: Lancet Date: 1993-06-19 Impact factor: 79.321
Authors: S H Shapiro; P Ernst; K Gray-Donald; J G Martin; S Wood-Dauphinee; A Beaupré; W O Spitzer; P T Macklem Journal: Lancet Date: 1992-12-12 Impact factor: 79.321