health services accessibility Aged 2 Humans 2 aged 2 dentistry 2 epidemiology 2 human 2 rural population 2 Adolescent 1 Adult 1 African-Americans 1 Alaska 1 Carcinoma, Non-Small-Cell Lung 1 Child 1 Dental Assistants 1 EGFR TKI 1 EGFR protein, human 1 ErbB Receptors 1 Focus Groups 1 Lung Neoplasms 1 Medicare 1 Medicare Part D 1 Middle Aged 1 Mutation 1 Oral Health 1 Parents 1 Pediatric Dentistry 1 Protein Kinase Inhibitors 1 Retrospective Studies 1 Rural Health Services 1