Authors: C J Hawkey; J A Karrasch; L Szczepañski; D G Walker; A Barkun; A J Swannell; N D Yeomans 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