W1 – McNicholas,J., Collis, G.M., Gilbey, A.P, & Seghal, J. Beneficial effects of pet ownership on child immune function. Paper presented at the 10^th International Conference on Human-Animal Interactions, October, Glasgow, 2004.

W2 – McNicholas, J. & Collis, G.M. Pets as providers of social support: Evidence from a longitudinal study of spousal bereavement. Paper presented at the 9^th International Conference on Human-Animal Interactions, Prague, September, 1998

W3 - McNicholas, J., Collis, G.M., Kent, C.& Rogers, M. The role of pets in the support networks of people recovering from breast cancer. Paper presented at the 10th International Conference on Human-Animal Interactions, Rio de Janeiro, September, 2001

W4 – UK Pet Ownership Grows. www.whichfranchise.com

W5 – McNicholas, J. Cats and Asthma: A Review of Recent Findings. www. cats.org.uk

W6 – McNicholas, J., Collis, G.M. & Morley, I.E. Pets and People in Residential Care. Social Care Research Findings 44; December 1993:The Joseph Rowntree Foundation