Received: 24 December 2019
Accepted: 24 June 2020
First Online: 3 July 2020
Ethics approval and consent to participate
: The research related to human use has been compiled with all the relevant national regulations, institutional policies and in accordance of the tenets of the Helsinki declaration. The study has been approved by the local institutional review board at Rabin medical center (Approval No. 0861–17-RMC). Informed consent was waived due the retrospective design of the study.
: Not applicable.
: Eran Hadar, the corresponding author for this manuscript, serves as a member of the editorial board for this journal (BMC Pregnancy and Childbirth associate editor). All other authors declare that they have no competing interests.