Hearing loss is a
problem with higher incidence in South Asia, Asia Pacific and sub-Saharan
Africa. In these countries there is also associated history of anemia and
malaria.
This study aims
to identify a putative role of Beta globin mutation - sickle cell trait and HL
in São Tomé and Príncipe population. A retrospective
case-control study of a convenience sample was collected during
Otolaryngologist Humanitarian Missions in São Tomé and Príncipe.
Control group
includes individuals with normal hearing in both ears, and the case group has
participants presenting bilateral or unilateral HL.
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