1. Department of Organizational Systems and Adult Health, University of Maryland School of Nursing, Baltimore, MD, USA.
2. Institute of Higher Education and Research in Healthcare (IUFRS), Department of Biology and Medicine, University Hospital of Lausanne, University of Lausanne, Lausanne, Switzerland.
3. Department of Prevention and Community Health, Milken Institute School of Public Health, The George Washington University, Washington, DC, USA.
4. Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, USA.
5. RTI International, Research Triangle Park, NC, USA.