Preconception Hb concentration and risk of preterm birth in over 2·7 million Chinese women aged 20–49 years: a population-based cohort study

Maternal and neonatal outcomes related to iron supplementation or iron status: a summary of meta-analyses

(2017) Sehar Iqbal et al.   Journal of Maternal-Fetal & Neonatal Medicine

Global, regional, and national age-sex specific mortality for 264 causes of death, 1980–2016: a systematic analysis for the Global Burden of Disease Study 2016

(2017) Mohsen Naghavi et al.   LANCET

Preconception blood pressure and risk of preterm birth: a large historical cohort study in a Chinese rural population

(2015) Ying Yang et al.   FERTILITY AND STERILITY

Global, regional, and national causes of child mortality in 2000–13, with projections to inform post-2015 priorities: an updated systematic analysis

(2015) Li Liu et al.   LANCET

Anemia before pregnancy and risk of preterm birth, low birth weight and small-for-gestational-age birth in Korean women

(2013) S-W Yi et al.   EUROPEAN JOURNAL OF CLINICAL NUTRITION

Hemoglobin Concentration and Pregnancy Outcomes: A Systematic Review and Meta-Analysis

(2013) Bunyarit Sukrat et al.   Biomed Research International

Maternal hemoglobin concentration and adverse pregnancy outcomes at low and moderate altitudes in Peru

(2012) Gustavo F. Gonzales et al.   Journal of Maternal-Fetal & Neonatal Medicine

Racial disparities in maternal hemoglobin concentrations and pregnancy outcomes

(2012) Mohamed A. Mohamed et al.   JOURNAL OF PERINATAL MEDICINE

National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications

(2012) Hannah Blencowe et al.   LANCET

Maternal haemoglobin level at booking visit and its effect on adverse pregnancy outcome

(2010) Chrishantha ABEYSENA et al.   AUSTRALIAN & NEW ZEALAND JOURNAL OF OBSTETRICS & GYNAECOLOGY

Maternal hemoglobin level and fetal outcome at low and high altitudes

(2009) Gustavo F. Gonzales et al.   AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY

Maternal anaemia and preterm birth: a prospective cohort study

(2009) Q. Zhang et al.   INTERNATIONAL JOURNAL OF EPIDEMIOLOGY

Epidemiology and causes of preterm birth

(2008) Robert L Goldenberg et al.   LANCET