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Article History

Received: 26 September 2021

Accepted: 30 November 2021

First Online: 14 January 2022

Declarations

:

: All the authors of this study have nothing to disclose. The PPG Stress Flow and BIA-ACC devices have been validated and CE-certified as non-invasive medical devices used for diagnostic and monitoring purposes and have been used in the EU since 2004. The use of the data of these devices for this clinical research study was approved by the Ethics Committee of the University Research Institute of Maternal and Child Health and Precision Medicine that certifies that the study was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. Verbal informed consent was obtained prior to the test measurements by all the study participants.

: Consent waiver was conceded by the Ethics Committee due to the retrospective nature of the study and according to national laws.

: George P. Chrousos, Nektaria Papadopoulou-Marketou, Flora Bacopoulou, and Mariantonietta Lucafò have no conflict of interest. Dario Boschiero is Scientific and Research and Development Director and Andrea Gallotta Director of Design and Quality Assurance, BioTekna Co., Venice, Italy. All authors have approved the final version of the manuscript. All authors meet the ICMJE authorship criteria. The authors declare that they have no competing interests.

: Informed consent was not necessary given that the information in this study is anonymized and the submission does not include images that may identify the person.