TY - RPRT TI - The exercise test as gatekeeper. Limiting access or appropriately directing resources? AU - R Marcus AU - R Lowe AU - V F Froelicher AU - D Do PY - 1995 DO - 10.1378/chest.107.5.1442 UR - https://pubmed.ncbi.nlm.nih.gov/7750345/ ID - 7750345 ER -