Hubungan Neutrophil to Lymphocyte Ratio dan Flynn Severity Score terhadap tingkat keparahan dan lama rawat inap pada pasien infeksi odontogenik maksilofasial di RSUPN DR. CIPTO MANGUNKUSUMO periode Januari 2019 - Desember 2023 = Correlation Between Neutrophil to Lymphocyte Ratio and Flynn Severity Score towards severity rate and length of hospitalization on maxillofacial odontogenic infection patients at RSUPN DR. CIPTO MANGUNKUSUMO for the period January 2019 - December 2023