1 University of Pennsylvania School of Nursing, Philadelphia, Pennsylvania, USA.
2 Department of Health and Human Services, Western Carolina University, Cullowhee, North Carolina, USA.
3 Department of Psychiatry and Behavioral Sciences, Memorial Sloan Kettering Cancer Center, New York, New York, USA.
4 Weill Cornell Medical College, New York, New York, USA.
5 Division of Nursing Research and Education, Department of Population Sciences, City of Hope National Medical Center, Duarte, California, USA.
6 Doris A. Howell Palliative Care Service and Deparment of Volunteer and Spiritual Care Services, University of California San Diego Health, San Diego, California, USA.
7 Supportive Care Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA.