1. Armstrong, J.S. and Overton, T.S. (1977), “Estimating nonresponse bias in mail surveys”, Journal of Marketing Research, Vol. 14 No. 3, pp. 369‐402.
2. Blouin, A.S. and Brent, N.J. (1999), “Outsourcing legal services in healthcare”, Journal of Nursing Administration, Vol. 29 No. 11, pp. 18‐20.
3. Cameron, R. (1998), “Healthcare cleaning in New Zealand … a contractor's perspective”, INCLEAN Magazine: Australasia's Cleaning Industry and Environmental Technology Magazine, Vol. 1 No. 4, available at: www.fmlink.com/Prof/Resources/Magazines/article.cgi?InClean:inc05971.htm.
4. Chow, G. and Heaver, T. (1994), “Logistics in the Canadian health care industry”, Canadian Logistics Journal, Vol. 1 No. 1, pp. 29‐73.
5. Gardner, E. (1991), “Going on line with outsiders”, Modern Healthcare, July 15, pp. 35‐47.