Authors: N D Yeomans; Z Tulassay; L Juhász; I Rácz; J M Howard; C J van Rensburg; A J Swannell; C J Hawkey Journal: N Engl J Med Date: 1998-03-12 Impact factor: 91.245
Authors: F E Silverstein; D Y Graham; J R Senior; H W Davies; B J Struthers; R M Bittman; G S Geis Journal: Ann Intern Med Date: 1995-08-15 Impact factor: 25.391