Acknowledgments
Author contributions : NF and JH conceived the study. NF and JH
drafted the initial protocol, analyzed the data, and prepared the first
draft of the manuscript. All authors collected data and analyzed each
maternal death. NF and JH coordinated the study and developed the
database and analyzed the data. All authors contributed to the drafting
of the manuscript. JH, MD, JK and NS are the guarantors for the study.
All authors had full access to all of the data in the study and take
responsibility for the integrity of the data and the accuracy of the
data analysis.
Competing financial Interest statement: All authors declare
that they have no conflict of interest.
Data availability: The data related to this study was collected
from medical records, paying attention to confidentiality.
Ethical approval and informed consent: All procedures performed
in studies involving human participants were in accordance with the
ethical standards of the institutional and/or national research
committee and with the 1964 Helsinki declaration and its later
amendments or comparable ethical standards. The study protocol was
approved by the Institutional Review Boards (IRBs) of St Marianna
university hospital (No.4543). Written informed consent was obtained
from patients. Although the analysis was retrospective and the
confidentiality of the patients involved was protected. All patients’
records/information was anonymized and de-identified prior to analysis.