Comparisons with other studies; 
In Seattle, USA, average weekly surgical volume decreased by 71.7% in a vascular surgery unit (3). In Milan, Italy, maxillo-facial units, outpatients surgery decreased by 86% and inpatients surgery decreased by 78% (4). In San Francisco, the department of surgery reduced operating room volume by 80% (5). In Marseille, France, during the first month of confinement, a decrease of almost 50% was observed in the number of spine surgical procedures (6).
However, the number of scheduled tracheostomies increased. Indeed, patients who become severely ill from COVID-19 have a high likelihood of needing prolonged intubation, making tracheostomy a likely consideration (7). In the context of the COVID-19 epidemic, the strategy adopted by many intensive care units consisted in early tracheostomy to wean off intubation in selective patients with severe ARDS and transfer them to a ventilatory weaning unit thus creating room for new patients in ICU (8,9).