Fig. 1

Equipment-sampling sites. A cuff syringe, B cuff pressure gauge, C drawer where the cuff syringes are stored, D drawer of the anesthesia machine where the cuff pressure gauges are stored
Equipment-sampling sites. A cuff syringe, B cuff pressure gauge, C drawer where the cuff syringes are stored, D drawer of the anesthesia machine where the cuff pressure gauges are stored