1. Department of Sociology; University of Macau, E21-3007, FSS, Av. da Universidade, Taipa; Macau China
2. Faculty of Education; University of Macau, E33-3022, FED, Av. da Universidade, Taipa; Macau China
3. Department of Sociology; Willamette University, 900 State Street, Salem, OR 97301
4. Nonprofit Leadership Studies; University of Arkansas at Little Rock, 2801 S. University Avenue, Little Rock, AR 72204