CLINICAL OBSERVATION OF MALONDIALDEHYDE FREE RADICAL COMPOUND LEVELS IN URINE SAMPLES OF SMOKERS AND NON SMOKERS GIVEN JUICE WATERMELON (Citrullus Lanatus) Hlm. 18-23 NUR MASYITHAH ZAMRUDDIN, Kadek Ayu Dwi Septiani, Maria Almeida, Arman Rusman, Fahriani Istiqamah Jafar, Herman Herman December 31, 2025 https://doi.org/10.26753/jfks.v5i2.1933