Authors: L S Bakketeig; S H Eik-Nes; G Jacobsen; M K Ulstein; C J Brodtkorb; P Balstad; B C Eriksen; N P Jörgensen Journal: Lancet Date: 1984-07-28 Impact factor: 79.321
Authors: John J You; David A Alter; Therese A Stukel; Sarah D McDonald; Andreas Laupacis; Ying Liu; Joel G Ray Journal: CMAJ Date: 2010-01-04 Impact factor: 8.262