Prevalence of different pain patterns in patients with COVID-19: A systematic review and meta-analysis - Badakhsh, Behzad; Mansouri, Feizollah; Gholami, Ali; Karimian, Mohammad; Kafashian, Mohamadreza; Khorshidi, Ali; Soltany, Behrouz; Mahdikhani, Somayeh; Borji, Milad; Tarjoman, Asma; Nouri, Lida (Anaesthesia, Pain & Intensive Care, 2020)