1. United Nations. International Migration Report 2017:Highlights[ST/ESA/SER.A/404],: Department of Economic and Social Affairs, Population Division; 2017 [Available from: http://www.un.org/sustainabledevelopment/blog/2016/01/244-million-international-migrants-living-abroad-worldwide-new-un-statistics-reveal/.
2. Nunez C. The 7 biggest challenges facing refugees and immigrants in the US 2014 [Available from: https://www.globalcitizen.org/en/content/the-7-biggest-challenges-facing-refugees-and-immig/.
3. Immigrants' Access to Health Services [Place unknown]: [Publisher unknown]; [date unknown] [Available from: http://www.emcoalition.ca/policies/health/.
4. The association of immigration and acculturation attributes with oral health among immigrants in New York City;GD Cruz;AJPH,2009
5. Are immigrants healthier than native-born Canadians? A systematic review of the healthy immigrant effect in Canada;ZM Vang;ETHNICITY & HEALTH,2017