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TITLE: RISK Factors Identification of COVID-19 Patients with  Chronic Obstructive Pulmonary Disease: A  Retrospective Study in Punjab-Pakistan            
AUTHORS: Muhammad Muneeb Hassan; Muhammad H Tahir; Muhammad Ameeq; Farrukh Jamal; John Mendy T; Christophe Chesneau;
PUBLISHED: 2023
INDEXED IN: CrossRef Unpaywall