[1] Univ Western Ontario, Arthur Labatt Family Sch Nursing, FNB 2302, 1151 Richmond St, London, ON NBA 5C1, Canada
[2] Univ British Columbia, Sch Nursing, Vancouver, BC V5Z 1M9, Canada
[3] Univ New Brunswick, Fac Nursing, POB 4400, Fredericton, NB, Canada
[4] Johns Hopkins Univ, Sch Nursing, Baltimore, MD USA
[5] McMaster Univ, Offord Ctr Child Studies, Dept Psychiat & Behav Neurosci, Hamilton, ON, Canada
[6] Univ Western Ontario, Fac Informat & Media Studies, London, ON, Canada