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Authors
Palacios-Fernandez, Sergio http://orcid.org/0000-0002-0960-5087
Salcedo, Mario
Gonzalez-Alcaide, Gregorio
Ramos-Rincon, Jose-Manuel
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Article History
Received: 12 August 2020
Accepted: 8 June 2021
First Online: 16 June 2021
Declarations
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: This study was performed in accordance with the Declaration of Helsinki and all applicable Spanish laws.Its performance did not require approval from an ethics committee since it did not involve human participants, human material or human identifiable data.A data extraction request was sent to the Subdirectorate for Health Information of the Spanish Ministry of Health. This request contained a brief explanation of the current study. The request was approved by the Ministry and permission was granted to the authors to extract the data.
: Not applicable.
: The authors declare that they have no competing interests.
