A peer reviewed paper by Haynes Marine is published in the Diving and Hyperbaric Medicine Journal of the South Pacific Underwater Society and European Underwater and Baromedical Society. Titled Increasing The Probability of Surviving Loss of Consciousness Underwater When Using a Rebreather, this paper examines the potential efficacy of a rebreather mouthpiece retaining strap and is considered by many senior personal within the recreational / technical and occupational rebreather diving industries to be a notable contribution to rebreather diving safety

Haynes P. Increasing the probability of surviving loss of consciousness underwater when using a rebreather. Diving and Hyperbaric Medicine. 2016 December;46(4):253-259.

Diving and Hyperbaric Medicine Volume 46 No. 4 December 2016