Authors: M H Reacher; A Shah; D M Livermore; M C Wale; C Graham; A P Johnson; H Heine; M A Monnickendam; K F Barker; D James; R C George Journal: BMJ Date: 2000-01-22
Authors: A M Johnson; C H Mercer; B Erens; A J Copas; S McManus; K Wellings; K A Fenton; C Korovessis; W Macdowall; K Nanchahal; S Purdon; J Field Journal: Lancet Date: 2001-12-01 Impact factor: 79.321