Authors: S Yusuf; G Piedimonte; A Auais; G Demmler; S Krishnan; P Van Caeseele; R Singleton; S Broor; S Parveen; L Avendano; J Parra; S Chavez-Bueno; T Murguía De Sierra; E A F Simoes; S Shaha; R Welliver Journal: Epidemiol Infect Date: 2007-03-08 Impact factor: 2.451
Authors: Josef A I Weigl; Wolfram Puppe; Claudius U Meyer; Reinhard Berner; Johannes Forster; Heinz J Schmitt; Fred Zepp Journal: Eur J Pediatr Date: 2007-06-14 Impact factor: 3.183