Towards a universal concept of vulnerability: Broadening the evidence from the elderly to perinatal health using a Delphi approach

• Nynke de Groot,

  Roles Formal analysis, Writing – original draft, Writing – review & editing

  Affiliations Maternity Care Academic Research Group, Department of Obstetrics and Gynecology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands, Department of Obstetrics and Gynecology/Division of Obstetrics and Prenatal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands

  http://orcid.org/0000-0002-0940-3047

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• Gouke J. Bonsel,

  Roles Conceptualization, Formal analysis, Methodology, Writing – original draft

  Affiliations Maternity Care Academic Research Group, Department of Obstetrics and Gynecology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands, Department of Obstetrics and Gynecology/Division of Obstetrics and Prenatal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands, Department of Public Health, Erasmus Medical Center, Rotterdam, The Netherlands

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• Erwin Birnie ,

  Roles Writing – review & editing

  * E-mail: birnie@eshpm.eur.nl

  Affiliation Erasmus School of Health Policy and Management, Erasmus University Rotterdam, The Netherlands

  http://orcid.org/0000-0002-4534-4857

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• Nicole B. Valentine

  Roles Supervision, Writing – review & editing

  Affiliation Public Health, Environmental and Social Determinants of Health Department (PHE), World Health Organization, Geneva, Switzerland

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