Comparison of blood and environmental manganese levels among school children in two South African cities Author: R�llin HB, Mathee A, Wewers F, Theodorou P, Levin J. Source: Epidemiology. 2003;14(5):S19, abstract. Babalwa Jekwa2019-04-04T12:57:36+02:00Dec 31st, 2003| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail