Asthma exacerbations with long-term follow-up: a retrospective study

Introduction: Clinical predictors of asthma exacerbations have been well investigated, but the study period is usually several years. Long-term follow-up is required to clarify the clinical course of asthma. Aim and Objectives: This study aimed to investigate the frequency of asthma exacerbations with long-term follow-up. Methods: We retrospectively reviewed the medical records of asthmatic patients who have been...