Authors: R G Roetzheim; N Pal; E C Gonzalez; J M Ferrante; D J Van Durme; J Z Ayanian; J P Krischer Journal: J Fam Pract Date: 1999-11 Impact factor: 0.493
Authors: L Nyström; L E Rutqvist; S Wall; A Lindgren; M Lindqvist; S Rydén; I Andersson; N Bjurstam; G Fagerberg; J Frisell Journal: Lancet Date: 1993-04-17 Impact factor: 79.321
Authors: G Gatta; R Capocaccia; M Sant; C M Bell; J W Coebergh; R A Damhuis; J Faivre; C Martinez-Garcia; J Pawlega; M Ponz de Leon; D Pottier; N Raverdy; E M Williams; F Berrino Journal: Gut Date: 2000-10 Impact factor: 23.059