Contribution to authorship:
Amir Lueth, MPH: Responsible for the conception, methodology, and hypothesis, planning, programing statistical codes, carrying out formal analysis, and writing up the manuscript.
Amanda A. Allshouse: Responsible for checking analysis and reviewing the final version of the manuscript.
Nathan M. Blue: Responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
William A. Grobman: One of the nuMoM2b PI who was responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Lisa D. Levine: One of the nuMoM2b PI who was responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Janet Catov: One of the nuMoM2b PI who was responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
George Saade: One of the nuMoM2b PI who was responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Lynn M. Yee: One of the nuMoM2b PI who was responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Fernando A. Wilson: Responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Maureen Murtaugh: Responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Noel Merz: One of the nuMoM2b PI who was responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Judith Chung: One of the nuMoM2b PI who was responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Mitali Ray: Responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Christina Scifres: One of the nuMoM2b PI who was responsible for providing comments, feedback on all sections of the manuscript and reviewing the final version of the manuscript.
Robert M. Silver: One of the nuMoM2b PI who was responsible for providing critical and final comments on the hypothesis, plan and discussion section of the manuscript.
Details of patients consent: All participants gave written informed consent.