1. Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
2. Institute of Parenting, Adelphi University, Garden City, NY, USA
3. Department of Behavioral Biology, Konrad Lorenz Research Station, University of Vienna, Vienna, Austria
4. Department of Special Education, Institut für Sonderpädagogische Entwicklungsförderung und Rehabilitation, University of Rostock, Rostock, Germany
5. College of Professional and Continuing Education, WALTHAM Centre for Pet Nutrition, Leicestershire, UK