“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”. 2019. Jurnal Kesehatan Qamarul Huda 7 (2): 1-4. https://doi.org/10.37824/jkqh.v7i2.2019.105.