Authors: R Tertti; K Granfors; O P Lehtonen; J Mertsola; A L Mäkelä; I Välimäki; P Hänninen; A Toivanen Journal: J Infect Dis Date: 1984-02 Impact factor: 5.226
Authors: S E Attwood; K Mealy; M T Cafferkey; T F Buckley; A B West; N Boyle; E Healy; F B Keane Journal: Lancet Date: 1987-03-07 Impact factor: 79.321