Lubis, W. H., Tampubolon, K. E. . and Saragih, A. . (2017) “The Effect Of Gargling Green Tea On Salivary Flow Rate On Female With Xerostomia At Puskesmas Darussalam Medan”, IIUM Medical Journal Malaysia, 16(2). doi: 10.31436/imjm.v16i2.1112.