Preliminary comparison of head exposure in sled hockey and football athletes (Koser J, Begonia M, Uihlein M, Lee K, Shah A, Humm J, Pintar F) 54th Annual Rocky Mountain Bioengineering Symposium Rmbs 2017 and 54th International ISA Biomedical Sciences Instrumentation Symposium 2017 2017;2017-March SCOPUS ID: 2-s2.0-85048730243 01/01/2017