Authors: A J Wakefield; S H Murch; A Anthony; J Linnell; D M Casson; M Malik; M Berelowitz; A P Dhillon; M A Thomson; P Harvey; A Valentine; S E Davies; J A Walker-Smith Journal: Lancet Date: 1998-02-28 Impact factor: 79.321
Authors: Douglas G Mackenzie; George Craig; Nicholas F Hallam; Janelle Moore; Janet Stevenson Journal: Br J Gen Pract Date: 2006-07 Impact factor: 5.386