TY - RPRT TI - Long-term oxygen therapy: do current guidelines need revision? AU - E Weitzenblum AU - A Chaouat AU - R Kessler PY - 1999 DO - 10.1034/j.1399-3003.1999.13e44.x UR - https://pubmed.ncbi.nlm.nih.gov/10414428/ ID - 10414428 ER -