Nurmawati I, Erawantini F. Level of Knowledge of Menstruation in Supporting Elementary Students Preparation For Menarche. JKMA [Internet]. 2018 Jun. 25 [cited 2024 Dec. 21];12(1):10-5. Available from: https://jurnal.fkm.unand.ac.id/index.php/jkma/article/view/270