Instruction and study (1) Doors (1) Surgery (1) Cleaning (1) Children (1) Prevention (1) Pediatricians (1) Otolaryngologists (1) Months (1) Medical sciences (1) Mass media (1) Holes (1) Goal (Psychology) (1) Average (1) In literature (1) Ursa Minor (1) Science (1) Rates (1) Practice (1) Patients (1) Medicine (1) Processing (1) Effectiveness (1) Educación--Fines y objetivos (1) Ciencias biomédicas (1) Ciencias (1) Limpieza (1) Cirugía (1) Medios de comunicación social (1) Medicina (1)