Authors: C E Butterworth; K D Hatch; M Macaluso; P Cole; H E Sauberlich; S J Soong; M Borst; V V Baker Journal: JAMA Date: 1992 Jan 22-29 Impact factor: 56.272
Authors: R W Smithells; S Sheppard; C J Schorah; M J Seller; N C Nevin; R Harris; A P Read; D W Fielding Journal: Lancet Date: 1980-02-16 Impact factor: 79.321