Correspondence (letter to the editor): use familiar material.
Strauss
Jochen
J
Becke
Karin
K
D002648:Child; D004632:Emergency Medical Services / Q000592:standards*; D004867:Equipment Design; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation*; D017214:Laryngeal Masks / Q000592:standards*; D017751:Safety Management / Q000592:standards