1 School of Nursing, University of Pennsylvania, 418 Curie Boulevard, Philadelphia, PA 19104-4217, United States; Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia. Electronic address: briegel@nursing.upenn.edu.
2 Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherland.
3 Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, United States. Electronic address: freedlak@wustl.edu.
4 School of Nursing, Boston College, United States; Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia.
5 Department of Health, Medicine and Caring Sciences and Department of Cardiology, Linkoping University, Sweden.
6 University of Rome "Tor Vergata", Italy.
7 Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherland; Department of Health, Medicine and Caring Sciences, Linkoping University, Sweden; Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherland.