Nkporbu, Kennedy Aborlo, C Ojule, and Ibitrokoemi Korubo. 2016. “Prevalence of Depressive Illness Among Patients With Asthmatic Disease Attending the University of Port Harcourt Teaching Hospital (UPTH)”. The Nigerian Health Journal 15 (3):140. https://tnhjph.com/index.php/tnhj/article/view/233.