Development,Reliability and Validity of Community Health Service Demand Questionnaire for Patients with COPD Based on Omaha System 
HUANG Yaqi,YU Hangqing,LIU Fang,ZHANG Qing
Chinese General Practice . 2018, (28): 3527 -3532 .  DOI: 10.12114/j.issn.1007-9572.2018.28.022