https://www.nepjol.info/https://www.kar-group.com/https://ijssers.org/https://prodentist.ru/https://journalofmedical.org/https://schwlar.com/https://jurnal.isi-dps.ac.id/https://www.hotelconcordia.ro/https://murninetsv2.planmalaysia.gov.my/https://ojs.uph.edu/