TY - RPRT TI - Efficient breathing circuit for use at altitude. AU - Kyle T S Pattinson AU - Ron B Somogyi AU - Joseph A Fisher AU - Arthur R Bradwell AU - Society the Birmingham Medical Research Expeditionary PY - 2005 DO - 10.1580/pr08-04.1 UR - https://pubmed.ncbi.nlm.nih.gov/15974260/ ID - 15974260 ER -