Amerindian (but not African or European) ancestry is significantly associated with diurnal preference within an admixed Brazilian population - Egan, Kieren J.; Santos, Hadassa Campos; Beijamini, Felipe; Duarte, Nubia Esteban; Horimoto, Andréa Roseli Vançan Russo; Taporoski, Tâmara Pessanha; Vallada Filho, Homero Pinto; Negrão, André Brooking; Krieger, José Eduardo; Pedrazzoli Neto, Mário; Knutson, Kristen L.; Pereira, Alexandre Costa; et al. (Chronobiology International, 2017)