Baumrucker Steven J, Sheldon Joanne E, Morris Gerald M, Stolick Matt, Carter Gregory T, Harrington Diane
Wellmont Holston Valley Palliative Medicine Service and Eastern Tennessee State University College of Medicine, Johnson City, Tennessee, USA.
Am J Hosp Palliat Care. 2007;24(6):509-14. doi: 10.1177/1049909107310064.