Zhaoning, X. (2023). Efficacy and safety of long-term use of a positive expiratory pressure device in chronic obstructive pulmonary disease patients, a randomized controlled trial. Springer.
Chicago Style CitationZhaoning, Xu. Efficacy and Safety of Long-term Use of a Positive Expiratory Pressure Device in Chronic Obstructive Pulmonary Disease Patients, a Randomized Controlled Trial. Springer, 2023.
MLA CitationZhaoning, Xu. Efficacy and Safety of Long-term Use of a Positive Expiratory Pressure Device in Chronic Obstructive Pulmonary Disease Patients, a Randomized Controlled Trial. Springer, 2023.
Warning: These citations may not always be 100% accurate.