Face Mask Ventilation: A Comparison of Three Techniques - ScienceDirect
Bag-mask ventilation during intubation reduces severe hypoxemia | CHEST Physician
Face mask | OpenAirway
Comparison of effectiveness of two commonly used two-handed mask ventilation techniques on unconscious apnoeic obese adults - British Journal of Anaesthesia
Head Rotation for Mask Ventilation | resusme
Non-Invasive Ventilation Masks | Draeger
Trick of the trade: Face mask ventilation in edentulous patients