共 36 条
- [2] Bernstein CN, 1999, AM J EPIDEMIOL, V149, P916, DOI 10.1093/oxfordjournals.aje.a009735
- [3] Canada S, 2016, 2016 CENS POP
- [4] Canada S., 2019, NAT OCC CLASS NOC 20
- [7] Coward S., 2018, J. Can. Assoc. Gastroenterol, V1, P47, DOI DOI 10.1093/JCAG/GWY009.029
- [9] Dillman D.A., 2014, Internet, Mail and Mixed-Mode Surveys: The Tailored Design Method
- [10] Hemp P, 2004, HARVARD BUS REV, V82, P49