Authors: H R Yusuf; R W Rochat; W S Baughman; P M Gargiullo; B A Perkins; M D Brantley; D S Stephens Journal: Am J Public Health Date: 1999-05 Impact factor: 9.308
Authors: R E Stanwell-Smith; J M Stuart; A O Hughes; P Robinson; M B Griffin; K Cartwright Journal: Epidemiol Infect Date: 1994-04 Impact factor: 2.451