Wan Ismail, W. K., P. H. K. Chan, N. Buhari, and A. Muzaini. “Acceptance of Smartphone in Enhancing Patient-Caregivers Relationship”. Journal of Technology Management & Innovation, Vol. 7, no. 3, Sept. 2012, pp. 71-79, doi:10.4067/S0718-27242012000300007.