1. Health Professions Networks, Nursing and Midwifery Office Department of Human Resources for Health World Health Organization. Strategic directions for strengthening nursing and midwifery services—2011–2015. http://www.who.int/hrh/nursing_midwifery/en/ (accessed 6 May 2014).
2. National Institute of Nursing Research; building the scientific foundation for clinical practice. https://www.ninr.nih.gov/ (accessed 6 May 2014).
3. European Society of Paediatric and Neonatal Intensive Care. http://www.espnic-online.org (accessed 6 May 2014).
4. Consulting the oracle: ten lessons from using the Delphi technique in nursing research;Keeney;J Adv Nurs,2006
5. The Delphi Technique in Nursing and Health Research