TY  - RPRT
TI  - Sudden unexpected death on challenge courses.
AU  - Thomas R Welch
AU  - Robert Ryan
PY  - 2002
DO  - 10.1580/1080-6032(2002)013[0140:sudocc]2.0.co;2
UR  - https://pubmed.ncbi.nlm.nih.gov/12092968/
ID  - 12092968
ER  -