List of Articles Efficient Frontier Open Access Article Abstract Page Full-Text 1 - Evaluating the Efficiency of Hospital Emergencies during COVID-19 Pandemic Crisis in the Presence of Undesirable Inputs in DEA Abbasali Monzeli Behrouz Daneshian Ghasem Tohidi Masoud Sanei Shabnam Razavyan 10.30495/fomj.2021.1943126.1040