Cwalina, Izabela, Marta Komarowska, Ewelina Dargiewicz, and Adam Hermanowicz. 2018. “The Study of Leptin Concentration in Saliva During Orthodontic Treatment, Periodontal Diseases and Wound Healing in the Oral Mucosa-Review”. Journal of Education, Health and Sport 8 (12):743-50. https://apcz.umk.pl/JEHS/article/view/6433.