From: Sub-clinical rheumatic heart disease (RHD) detected by hand-held echocardiogram in children participating in a school-based RHD prevention program in Tanzania
Region
District
Selected schools
Semi-urban
Rural
Manyara
Kiteto
Kaloleni
Osteti
Babati
Magugu
Mbugwe, Dareda Kati
Pwani
Bagamoyo
Kiromo
Buma, Kondo
Kisarawe
Mloganzila
Masaki, Masanganya