Han MK, Martinez CH, Au DH, Bourbeau J, Boyd CM, Branson R, Criner GJ, Kalhan R, Kallstrom TJ, King A, Krishnan JA, Lareau SC, Lee TA, Lindell K, Mannino DM, Martinez FJ, Meldrum C, Press VG, Thomashow B, Tycon L, Sullivan JL, Walsh J, Wilson KC, Wright J, Yawn B, Zueger PM, Bhatt SP, Dransfield MT. Meeting the challenge of COPD care delivery in the USA: a multiprovider perspective. Lancet Respir Med. 2016 06; 4(6):473-526.