[1] Hong Kong Polytech Univ, Dept Appl Social Sci, Hong Kong, Peoples R China
[2] Educ Univ Hong Kong, Dept Hlth & Phys Educ, Hong Kong, Peoples R China
[3] Univ East Anglia, Norwich Med Sch, Dept Clin Psychol, Norwich, Norfolk, England
[4] Univ Rey Juan Carlos, Dept Psychol, Madrid, Spain
[5] Stanford Univ, Sch Med, Dept Psychiat & Behav Sci, Stanford, CA 94305 USA
[6] Univ Calif Davis, Betty Irene Moore Sch Nursing, Family Caregiving Inst, Davis, CA 95616 USA