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| Clinical Observation on "4S" Lung Rehabilitation Exercise Nursing Guidance for Patients with Chronic Obstructive Pulmonary Disease |
| LI Jun, QI Jingjing, ZHENG Zeguang |
| First-author's address: Department of Orthopedics, Xiangzhou District People's Hospital of Xiangyang City, Xiangyang 441100, China |
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