{Reference Type}: Letter {Title}: System leaks and the loss of sevoflurane. {Author}: Kalmar AF;Teunkens A;Rex S;Vereecke H;Mulier H;Struys MMRF; {Journal}: Anaesthesia {Volume}: 79 {Issue}: 9 {Year}: 2024 Sep 23 {Factor}: 12.893 {DOI}: 10.1111/anae.16386