Authors: R W Smithells; N C Nevin; M J Seller; S Sheppard; R Harris; A P Read; D W Fielding; S Walker; C J Schorah; J Wild Journal: Lancet Date: 1983-05-07 Impact factor: 79.321
Authors: T Dowswell; J G Thornton; J Hewison; R J Lilford; J Raisler; A Macfarlane; G Young; M Newburn; R Dodds; R S Settatree Journal: BMJ Date: 1996-03-23