Authors: L S Rickman; D M Gordon; R Wistar; U Krzych; M Gross; M R Hollingdale; J E Egan; J D Chulay; S L Hoffman Journal: Lancet Date: 1991-04-27 Impact factor: 79.321
Authors: P Aaby; K Knudsen; H Whittle; I M Lisse; J Thaarup; A Poulsen; M Sodemann; M Jakobsen; L Brink; U Gansted Journal: J Pediatr Date: 1993-06 Impact factor: 4.406