Authors: A Ragazzoni; A Grippo; P Ghidini; V Schiavone; F Lolli; F Mazzotta; L Mecocci; F Pinto Journal: Acta Neurol Scand Date: 1993-01 Impact factor: 3.209
Authors: W D Hardy; J Feinberg; D M Finkelstein; M E Power; W He; C Kaczka; P T Frame; M Holmes; H Waskin; R J Fass Journal: N Engl J Med Date: 1992-12-24 Impact factor: 91.245