Associations between pre-existing comorbidities and in-hospital cardiovascular events and mortality among COVID-19 patients in Bangladesh: a secondary analysis of a prospective cohort study - Tippawan Liabsuetrakul; Farzana Islam; Abdur Rahim; Abdul Wadud Chowdhury; Kazi Fayzus Salahin; Md. Robed Amin; Shahin Akter; Shamim Talukder; Quazi Monirul Islam (BMJ Open, 2024)