Authors: M J McLaren; D M Hawkins; H J Koornhof; K R Bloom; D M Bramwell-Jones; E Cohen; G E Gale; K Kanarek; A S Lachman; J B Lakier; W A Pocock; J B Barlow Journal: Br Med J Date: 1975-08-23
Authors: S Ibrahim-Khalil; M Elhag; E Ali; F Mahgoub; S Hakiem; N Omer; S Shafie; E Mahgoub Journal: J Epidemiol Community Health Date: 1992-10 Impact factor: 3.710