1. Is first trimester vitamin D status in nulliparous women associated with pregnancy related hypertensive disorders? 
Britte van Weert, BSc (Registered Midwife), Denice van den Berg, BSc (Registered Midwife), E. Jessica Hrudey, MSc (Junior Researcher, Data Manager), Adriëtte J.J.M. Oostvogels, MSc (PhD Candidate), Esteriek de Miranda, PhD (Registered Midwife and Senior Researcher), Tanja G.M. Vrijkotte, PhD (Assistant Professor, Epidemiologist) 
Midwifery 
Volume 34, Pages (March 2016)
DOI: /j.midw
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2. Fig. 1
Flowchart for study sample collection. *Sum of excluded data is greater than total excluded cases due to overlap in excluded variables. 25OHD=25-hydroxyvitamin D; ABCD=Amsterdam Born Children and their Development Study.
Midwifery  , DOI: ( /j.midw )
Copyright © 2016 The Authors Terms and Conditions