Chen, F., Nie, Q., Han, X., Li, C., Liu, Q., Xu, F., . . . Wang, H. Screening of COPD patients using the COPD diagnostic questionnaire and a portable spirometer in primary healthcare institutions: A cross-sectional, diagnostic study. BMC.
Chicago Style (17th ed.) CitationChen, Feng, et al. Screening of COPD Patients Using the COPD Diagnostic Questionnaire and a Portable Spirometer in Primary Healthcare Institutions: A Cross-sectional, Diagnostic Study. BMC.
MLA (9th ed.) CitationChen, Feng, et al. Screening of COPD Patients Using the COPD Diagnostic Questionnaire and a Portable Spirometer in Primary Healthcare Institutions: A Cross-sectional, Diagnostic Study. BMC.
Warning: These citations may not always be 100% accurate.