1. School of Mathematics, Jilin University, Changchun City, People’s Republic of China
2. Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong SAR, People’s Republic of China
3. Department of Statistics & Actuarial Science, The University of Hong Kong, Hong Kong SAR, People’s Republic of China
4. Hong Kong Jockey Club Centre for Suicide Research and Prevention, The University of Hong Kong, Hong Kong SAR, People’s Republic of China
5. Research Hub of Population Studies, University of Hong Kong, Hong Kong