Authors: R W Sutter; P A Patriarca; S Brogan; P G Malankar; M A Pallansch; O M Kew; A G Bass; S L Cochi; J P Alexander; D B Hall Journal: Lancet Date: 1991-09-21 Impact factor: 79.321
Authors: P E Slater; W A Orenstein; A Morag; A Avni; R Handsher; M S Green; C Costin; A Yarrow; S Rishpon; O Havkin Journal: Lancet Date: 1990-05-19 Impact factor: 79.321