References:

Sykes O, Clark JE. Patent foramen ovale and scuba diving: a practical guide for physicians on when to refer for screening. Extreme Physiology & Medicine. 2013;2:10. doi:10.1186/2046-7648-2-10

Zhang XC, Golden A, Bullard DS.  Neurologic deep dive: a simulation case of diagnosing and treating decompression sickness for emergency medicine residents.  MedEdPORTAL.  2016; 12: 10473.