Singleton, Jennifer M. http://orcid.org/0000-0001-5618-8178
Sanchez, Leon D.
Masser, Barbara A.
Reich, Betzalel
Article History
Received: 8 July 2017
Accepted: 1 March 2018
First Online: 7 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study were in accordance with the ethical standards of the independent Beth Israel-Needham oversight and quality assurance committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For this type of study (retrospective), formal consent is not required.