Text and Data Mining valid from 2018-07-28
Received: 20 June 2018
Accepted: 18 July 2018
First Online: 28 July 2018
Ethics approval and consent to participate
: A retrospective observational study was designed. The study was approved by the Ethics Committee of the Hospital Universitario Ramón y Cajal (Madrid, Spain) on December 11, 2015. The written informed consent was obtained from all the patients.The study was carried out in accordance with the Good Epidemiology Practice guidelines of the International Society for Pharmacoepidemiology. Likewise, the study was conducted according to the basic ethical principles of the Declaration of Helsinki, where applicable.
: Not applicable.
: FJSM and VLP perceived a fee for the design, conduction, and coordination of the study from Merck, S.L.U.NC is employee of Merck, S.L.U.BSL was contracted by Merck, S.L.U.All other authors declare that they have no competing interests.
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