TY - RPRT TI - Ventilatory function tests; factors affecting the voluntary ventilation capacity. AU - H W MATHESON AU - S N SPIES AU - J S GRAY AU - D R BARNUM PY - 1950 DO - 10.1172/jci102305 UR - https://pubmed.ncbi.nlm.nih.gov/15436659/ ID - 15436659 ER -