Article History
Received: 1 August 2019
Accepted: 11 September 2019
First Online: 2 November 2019
Compliance with ethical standards
:
: All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest, or non-financial interest in the subject matter or materials discussed in this manuscript.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Pitié-Salpêtrière research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: All four patients have consented to the submission of the case reports to the journal.