Effectiveness of Giving Loss of Rosella Tea on Decreasing Blood Pressure in Elderly Patients of Hypertension in Working Areas Puskesmas Sengkol Village Sengkol 2 District Pujut Regency of Central Lombok. J. Kesehat. Qamarul Huda. 2019;7(2):1-4. doi:10.37824/jkqh.v7i2.2019.105