Association Between Headache and Serum 25-Hydroxyvitamin D; the Tromsø Study: Tromsø 6

Effect of smoking on the serum levels of 25-hydroxyvitamin D depends on the assay employed

(2010) Guri Grimnes et al.   EUROPEAN JOURNAL OF ENDOCRINOLOGY

The prevalence of headache may be related with the latitude: a possible role of Vitamin D insufficiency?

(2010) Sanjay Prakash et al.   JOURNAL OF HEADACHE AND PAIN

Vitamin D status in patients with musculoskeletal pain, fatigue and headache: A cross-sectional descriptive study in a multi-ethnic general practice in Norway

(2010) Kirsten Valebjørg Knutsen et al.   SCANDINAVIAN JOURNAL OF PRIMARY HEALTH CARE

Chronic Tension-Type Headache With Vitamin D Deficiency: Casual or Causal Association?

(2009) Sanjay Prakash et al.   HEADACHE

Global vitamin D status and determinants of hypovitaminosis D

(2009) A. Mithal et al.   OSTEOPOROSIS INTERNATIONAL

Epidemiology and comorbidity of headache

(2008) Rigmor Jensen et al.   LANCET NEUROLOGY

Vitamin D and chronic pain

(2008) Sebastian Straube et al.   PAIN