19 Fernandes Fernandes F F Dantas Dantas S S Ianni Ianni BM BM Ramires Ramires FJ FJ Buck Buck P P Salemi Salemi VM VM et al et al Leptin Levels in Different Forms of Chagas' Disease Leptin Levels in Different Forms of Chagas' Disease Braz J Med Biol Res Braz J Med Biol Res 2007 2007 40 40 12 12 1631 1631 1636 1636 10.1590/s0100-879x2006005000152 10.1590/s0100-879x2006005000152 17713658 17713658. This evidence concerns the gene LEP and Chagas disease.