Authors: T W Valk; M S Frager; M D Gross; J C Sisson; D M Wieland; D P Swanson; T J Mangner; W H Beierwaltes Journal: Ann Intern Med Date: 1981-06 Impact factor: 25.391
Authors: J C Sisson; M S Frager; T W Valk; M D Gross; D P Swanson; D M Wieland; M C Tobes; W H Beierwaltes; N W Thompson Journal: N Engl J Med Date: 1981-07-02 Impact factor: 91.245