For citations:
Kiselnikova L.P., Toma E.I., Kiriyak S.O. The main criteria of dental morbidity in children under seven years of age living in regions with different fluoride content in drinking water. Pediatric dentistry and dental prophylaxis. 2021;21(4):231-235. (In Russ.) https://doi.org/10.33925/1683-3031-2021-21-4-231-235