Authors: C N Ellis; D C Gorsulowsky; T A Hamilton; J K Billings; M D Brown; J T Headington; K D Cooper; O Baadsgaard; E A Duell; T M Annesley Journal: JAMA Date: 1986-12-12 Impact factor: 56.272
Authors: D V Unverferth; J K Fetters; B J Unverferth; C V Leier; R D Magorien; A R Arn; P B Baker Journal: Circulation Date: 1983-12 Impact factor: 29.690