Authors: T M Hansen; P Kryger; H Elling; D Haar; M Kreutzfeldt; M W Ingeman-Nielsen; A T Olsson; C Pedersen; A Rahbek; N Tvede Journal: BMJ Date: 1990-08-04
Authors: P Durez; A Nzeusseu Toukap; B R Lauwerys; D H Manicourt; P Verschueren; R Westhovens; J-P Devogelaer; F A Houssiau Journal: Ann Rheum Dis Date: 2004-09 Impact factor: 19.103