Authors: J Hallas; L F Gram; E Grodum; N Damsbo; K Brøsen; T Haghfelt; B Harvald; J Beck-Nielsen; J Worm; K B Jensen Journal: Br J Clin Pharmacol Date: 1992-01 Impact factor: 4.335
Authors: R M Tamblyn; P J McLeod; M Abrahamowicz; J Monette; D C Gayton; L Berkson; W D Dauphinee; R M Grad; A R Huang; L M Isaac Journal: CMAJ Date: 1994-06-01 Impact factor: 8.262