(2019). Relationship between depression and severity of COPD among Egyptian elderly patients. test, 6(2), 26-29. doi: 10.21608/ejgg.2019.139018
. "Relationship between depression and severity of COPD among Egyptian elderly patients". test, 6, 2, 2019, 26-29. doi: 10.21608/ejgg.2019.139018
(2019). 'Relationship between depression and severity of COPD among Egyptian elderly patients', test, 6(2), pp. 26-29. doi: 10.21608/ejgg.2019.139018
Relationship between depression and severity of COPD among Egyptian elderly patients. test, 2019; 6(2): 26-29. doi: 10.21608/ejgg.2019.139018