DOI:
10.1055/s-00030576
Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics
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References
The World Bank.
Data: World Bank Country and Lending Groups [Internet].
2020 [cited 2020 Mar 10]. Available from:
https://datahelpdesk.worldbank.org/knowledgebase/articles/906519-world-bank-country-and-lending-groups
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