Andersson GB. Epidemiological features of chronic low-back pain. Lancet 1999; 354: 581-5.
Haldeman S. Low back pain: current physiologic concepts. Neurol Clin 1999; 17: 1-15.
Borenstein DG. Epidemiology, etiology, diagnostic evaluation, and treatment of low back pain. Curr Opin Rheumatol 2001; 13: 128-34.
McBeth J, Pye SR, O’Neill TW, Macfarlane GJ, Tajar A, Bartfai G, et al. Musculoskeletal pain is associated with very low levels of vitamin D in men: results from the european male ageing study. Ann Rheum Dis 2010; 69: 1448- 52.
Yoon JS, Song MK. Seasonal differences in outdoor activity time and serum 25-(OH) vitamin D status of Korean young women. Korean J Community Nutr 2014; 19: 231-40.
Park HM, Kim JY, Chung RJ, Kim JJ. The vitamin D perception survey on Korean postmenopausal women in the treatment of osteoporosis. Korean J Obstet Gynecol 2007; 50: 1003-11.
Yoon H, Kim GS. The association of vitamin D and pulse pressure in Korean adults: Korea National Health and Nutrition Survey, 2010. J Korean Acad Industr Coop Soc 2013; 14: 2735-42.
Baek JH, Yang HH, Lee MR, Kang DW, Jeon YJ, Park SG, et al. The association of vitamin D with depressive symptoms in Korean adolescents: Korean National Health and Nutrition Examination Survey 2009~2011. Korean J Fam Pract 2015; 5(Suppl 3): S654-8.
Joo NS. Clinical applications of vitamin D. Korean J Fam Pract 2014; 4: 7-14.
Gómez Alonso C, Naves Díaz M, Rodríguez García M, Fernández Martín JL, Cannata Andía JB. Review of the concept of vitamin D “sufficiency and insufficiency”. Nefrologia 2003; 23 Suppl 2: 73-7.
Hicks GE, Shardell M, Miller RR, Bandinelli S, Guralnik J, Cherubini A, et al. Associations between vitamin D status and pain in older adults: the Invecchiare in Chianti study. J Am Geriatr Soc 2008; 56: 785-91.
Misra M, Pacaud D, Petryk A, Collett-Solberg PF, Kappy M; Drug and Therapeutics Committee of the Lawson Wilkins Pediatric Endocrine Society. Vitamin D deficiency in children and its management: review of current knowledge and recommendations. Pediatrics 2008; 122: 398-417.
Prentice A, Goldberg GR, Schoenmakers I. Vitamin D across the lifecycle: physiology and biomarkers. Am J Clin Nutr 2008; 88: 500S-6.
Hollis BW, Horst RL. The assessment of circulating 25(OH)D and 1,25(OH)2D: where we are and where we are going. J Steroid Biochem Mol Biol 2007; 103: 473-6.
Holick MF. Sunlight and vitamin D for bone health and prevention of autoimmune diseases, cancers, and cardiovascular disease. Am J Clin Nutr 2004; 80: 1678S-88.
Kim YE. The association between vitamin D deficiency and frailty syndrome. J Korean Life Insur Med Assoc 2007; 26: 3-12.
Heidari B, Shirvani JS, Firouzjahi A, Heidari P, Hajian-Tilaki KO. Association between nonspecific skeletal pain and vitamin D deficiency. Int J Rheum Dis 2010; 13: 340-6.
Holick MF. Vitamin D deficiency. N Engl J Med 2007; 357: 266-81.
Chang WC, Kwon IS, Park BJ, Bae SH, Park SC. The association of vitamin D and parathyroid hormone with bone mineral density in Korean postmenopausal women. J Korean Geriatr Soc 2003; 7: 194-205.
Lee JH, O’Keefe JH, Bell D, Hensrud DD, Holick MF. Vitamin D deficiency an important, common, and easily treatable cardiovascular risk factor? J Am Coll Cardiol 2008; 52: 1949-56.
Cha BK, Park CS. A comparison of pain, pain interference and fatigue according to the level of physical activity in the elderly with chronic pain. J Korean Acad Community Health Nurs 2011; 22: 162-72.
Ganji V, Milone C, Cody MM, McCarty F, Wang YT. Serum vitamin D concentrations are related to depression in young adult US population: the third national health and nutrition examination survey. Int Arch Med 2010; 3: 29.
Felson DT, Zhang Y, Anthony JM, Naimark A, Anderson JJ. Weight loss reduces the risk for symptomatic knee osteoarthritis in women. The Framingham study. Ann Intern Med 1992; 116: 535-9.
Felson DT, Lawrence RC, Dieppe PA, Hirsch R, Helmick CG, Jordan JM, et al. Osteoarthritis: new insights. Part 1: the disease and its risk factors. Ann Intern Med 2000; 133: 635-46.
Sharma L. Local factors in osteoarthritis. Curr Opin Rheumatol 2001; 13: 441-6.
von Känel R, Müller-Hartmannsgruber V, Kokinogenis G, Egloff N. Vitamin D and central hypersensitivity in patients with chronic pain. Pain Med 2014; 15: 1609-18.