Leishmaniasis, VisceralLeishmaniasis, CutaneousLeishmania donovaniAntiprotozoal AgentsSkin Diseases, ParasiticSudanHuman ExperimentationParasitologyNeglected DiseasesBangladeshLeishmaniaParasite LoadIndiaEndemic DiseasesPhosphorylcholineSerologic TestsAntigens, ProtozoanAntibodies, ProtozoanInterleukin-10Medication AdherenceHealth PersonnelPolymerase Chain ReactionReal-Time Polymerase Chain ReactionSensitivity and Specificity