Authors: W O Spitzer; D L Sackett; J C Sibley; R S Roberts; M Gent; D J Kergin; B C Hackett; A Olynich Journal: N Engl J Med Date: 1974-01-31 Impact factor: 91.245
Authors: Henry D Anaya; Tuyen Hoang; Joya F Golden; Matthew Bidwell Goetz; Allen Gifford; Candice Bowman; Teresa Osborn; Douglas K Owens; Gillian D Sanders; Steven M Asch Journal: J Gen Intern Med Date: 2008-04-18 Impact factor: 5.128