1. School of Medicine, University of Central Lancashire, Preston, UK;
2. Families Division, Blackpool Victoria Hospital, Blackpool, UK;
3. School of Medicine, University of Liverpool, Liverpool, UK;
4. School of Health Sciences, University of Central Lancashire, Preston, UK;
5. Faculty of Clinical and Biomedical Sciences, University of Central Lancashire, Preston, UK;
6. Faculdade de Medicina Universidade de Lisboa, Lisboa, Portugal;
7. University of Michigan Medical School, Ann Arbor, MI, USA