TY - JOUR AU - Whelton, C AU - Barrow, J AU - Singhal, R AU - Board, T DO - doi:10.1302/1358-992X.2021.10.028 UR - https://doi.org/10.1302/1358-992X.2021.10.028 TI - CARBON DIOXIDE LEVELS IN ORTHOPAEDIC SURGICAL HELMETS T2 - Orthopaedic Proceedings VL - 103-B IS - SUPP_10 PY - 2021 SP - 28 EP - 28 ER -