Document is current

Article History

Received: 3 July 2023

Accepted: 18 September 2023

First Online: 17 November 2023

Declarations

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: Human placenta tissues were obtained from the Department of Obstetrics and Gynecology, Medical University of Vienna, with approval from the institutional ethics committee (EK:1602/2018) and informed consent from all donors. Animal experiments were conducted under protocols approved by the Tufts Institutional Animal Care and Use Committee (M2019-121). The experiments reported herein were conducted in compliance with the Animal Welfare Act and in accordance with the principles set forth in the “Guide for the Care and Use of Laboratory Animals,” Institute of Laboratory Animal Research, National Research Council, National Academies Press, 2011.

: All authors declare that this manuscript with the title, Silk fibroin, gelatin, and human placenta extracellular matrix-based composite hydrogels for 3D bioprinting and soft tissue engineering, is original, has not been published before and is not currently being considered for publication elsewhere. There are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome. We confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed. We further confirm that the order of authors listed in the manuscript has been approved by all of us. We confirm that we have given due consideration to the protection of intellectual property associated with this work and that there are no impediments to publication, including the timing of publication, with respect to intellectual property. We understand that the Corresponding Author is the sole contact for the Editorial process (including Editorial Manager and direct communications with the office). He is responsible for communicating with the other authors about progress, submissions of revisions and final approval of proofs. We confirm that we have provided a current, correct email address which is accessible by the Corresponding Author.

: The authors declare that they have no competing interests.