Vitamin D (25OHD) Serum Seasonality in the United States

Association between maternal serum 25-hydroxyvitamin D level and pregnancy and neonatal outcomes: systematic review and meta-analysis of observational studies

(2013) F. Aghajafari et al.   BMJ-British Medical Journal

High prevalence of vitamin D deficiency among children aged 1 month to 16 years in Hangzhou, China

(2012) Zhiwei Zhu et al.   BMC PUBLIC HEALTH

Modeling seasonal variation of hip fracture in Montreal, Canada

(2012) Reza Modarres et al.   BONE

The Association of Vitamin D Status With Pediatric Critical Illness

(2012) J. D. McNally et al.   PEDIATRICS

Chronic Obstructive Pulmonary Disease Is Associated with Low Levels of Vitamin D

(2012) Louise Jeanette Pauline Persson et al.   PLoS One

Asthma, allergy and respiratory infections: the vitamin D hypothesis

(2011) S. Bozzetto et al.   ALLERGY

Vitamin D and Asthma

(2011) Grace Paul et al.   AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE

Hypovitaminosis D as Predisposing Factor for Atrophic Type A Gastritis: a Case–Control Study and Review of the Literature on the Interaction of Vitamin D with the Immune System

(2011) Antonio Antico et al.   CLINICAL REVIEWS IN ALLERGY & IMMUNOLOGY

Vitamin D Deficiency and Seasonal and Inter-day Variation in Circulating 25-hydroxyvitamin D and Parathyroid Hormone Levels in Indoor Daytime Workers: A Longitudinal Study

(2011) Hiroaki ITOH et al.   INDUSTRIAL HEALTH

Shortcomings of Vitamin D-Based Model Simulations of Seasonal Influenza

(2011) Jeffrey Shaman et al.   PLoS One

Solar radiation and human health

(2011) Asta Juzeniene et al.   REPORTS ON PROGRESS IN PHYSICS

Randomized trial of vitamin D supplementation to prevent seasonal influenza A in schoolchildren

(2010) Mitsuyoshi Urashima et al.   AMERICAN JOURNAL OF CLINICAL NUTRITION

Vitamin D: modulator of the immune system

(2010) Femke Baeke et al.   CURRENT OPINION IN PHARMACOLOGY

The seasonality of pandemic and non-pandemic influenzas: the roles of solar radiation and vitamin D

(2010) Asta Juzeniene et al.   INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES

Vitamin D insufficiency: implications for the immune system

(2010) Femke Baeke et al.   PEDIATRIC NEPHROLOGY

Cyclic Changes of Vitamin D and PTH are Primarily Regulated by Solar Radiation: 5-Year Analysis of a German (50° N) Population

(2009) J. Reusch et al.   HORMONE AND METABOLIC RESEARCH

Occupational Exposure to Solar UVB and Seasonal Monitoring of Serum Levels of 25-hydroxy Vitamin D3: A Case-Control Study

(2009) Esther Azizi et al.   PHOTOCHEMISTRY AND PHOTOBIOLOGY

Serum 25-hydroxyvitamin D status of the US population: 1988–1994 compared with 2000–2004

(2008) Anne C Looker et al.   AMERICAN JOURNAL OF CLINICAL NUTRITION