Impacts of mining disasters on the ambulatory care of the Brazilian national health system: the cases of Mariana and Brumadinho/Brazil.

"Declarations Ethics approval and consent to participateThe ethics and research committee of the Federal University of São Paulo approved this study, which used open and publicly accessible secondary data sources from the Brazilian federal government’s Ministry of Health via Datasus. All methods were carried out in accordance with the relevant guidelines and regulations and following the guidelines informed and required by the committee.In accordance with the recommendations of National Health Council Resolution (CNS) No. 466 of December 12, 2012, the ethical principles of research involving human beings were respected, and the approval of the research ethics committee was dispensed with, since the study was carried out using secondary, publicly accessible data, without the possibility of identifying individual pieces of information. This ethics committee is called the Ethics and Research Committee of the Federal University of São Paulo, and is chaired by Dr. Álvaro Pacheco Silva e Filho and composed of the research team Paola Zucchi and Rita de Cássia da Silva and signed and filed with the Department of Translation. Medicine, with contact e-mail: medicinatranslacional@unifesp.br, which states that the committee will not be analyzed or submitted to it, and that the members/researchers will only have to sign the term of responsibility. All methods were carried out in accordance with the relevant guidelines and regulations and following the guidelines informed and required by the committee. Data were collected from the Datasus database, and as it was of a secondary nature, the informed consent form was waived. The waiver was approved by the aforementioned ethics committee and by the Ministry of Health/Brazil through an authorization made available on the website < https://datasus.saude.gov.br/acesso-a-informacao/>. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding The study received no funding, being financed entirely by the researchers."