Optoelectronic Plethysmography Characterises Thoracic Excursion In The Evaluation Of Dysfunctional Breathing (DB): 2313 Board #326 June 1 3. (May 2017) - Levai, Irisz K.; Massaroni, Carlo; Hull, James; Whyte, Greg; Silvestri, Sergio; Dickinson, John W.