Eyanoer PC, Simanjuntak NH, Hutagalung AK, Tampubolon JB, Hulu DA, Simanullang PA, Halawa PAD. THE RELATIONSHIP BETWEEN THE LEVEL OF KNOWLEDGE ABOUT CIGARETTES AND SMOKING BEHAVIOR AMONG STUDENTS IN THE WORKING ARE OF THE SERING HEALTH CENTER UPT, MEDAN CITY. JMKM [Internet]. 2026 Jan. 6 [cited 2026 Jan. 26];10(2):165-70. Available from: https://e-journal.sari-mutiara.ac.id/index.php/JMKM/article/view/6566