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Authors
Núñez-Cortés, Rodrigo
Chamorro, Claudio
Ortega-Palavecinos, Maritza
Mattar, Gustavo
Paredes, Orlando
Besoaín-Saldaña, Álvaro
Cruz-Montecinos, Carlos
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Article History
Received: 11 February 2019
Accepted: 19 June 2019
First Online: 18 July 2019
Compliance with ethical standards
: All the procedures performed in this study were approved by the Ethics Committee of the Southwest Metropolitan Health Service (Santiago, Chile), which were performed in accordance with the principles of the Declaration of Helsinki of the World Medical Association and its revision in 2013.
: The authors declare that they have no conflict of interest.
