Huyen, D. T. T.; Hoa, D. T.; Thanh Huong, N. T.; La, V. T.; Hieu, B. T.; Huong, P. T. T.; Tam, N. B.; Thi Ly, N.; Cuong, L. V.; Ngoc, P. T. B. Change in Practice of Using Inhalers for Outpatients Have Chronic Obstructive Pulmonary at Nam Dinh General Hospital After Health Education. ijreh 2021, 5 (1).