Is a daily supplementation with 40 microgram vitamin D3 sufficient? A randomised controlled trial

[11] Vermeiden JP(2006)Effect of cholecalciferol plus calcium on falling in ambulatory older men and women: a 3-year randomized controlled trial Arch Intern Med 166 424-430

[12] van der Meer C(2007)Risk assessment for vitamin D Am J Clin Nutr 85 6-18

[13] Zittermann A(2011)The 2011 report on dietary reference intakes for calcium and vitamin D from the Institute of Medicine: what clinicians need to know J Clin Endocrinol Metab 96 53-58

[14] Scheld K(1991)The timed “Up & Go”: a test of basic functional mobility for frail elderly persons J Am Geriatr Soc 39 142-148

[15] Stehle P(2005)Better functional mobility in community-dwelling elderly is related to D-hormone serum levels and to daily calcium intake J Nutr Health Aging 9 347-351

[16] Zittermann A(2003)Determination of 25-hydroxyvitamin D in serum by HPLC and immunoassay Clin Chem 49 1521-1524

[17] Dawson-Hughes B(2004)An automated ‘bio-intact’ PTH assay: a step towards standardisation and improved correlation with parathyroid function in renal disease Clin Chim Acta 343 167-171

[18] Harris SS(1995)Monoclonal antibody assay for measuring bone-specific alkaline phosphatase activity in serum Clin Chem 41 1560-1566

[19] Dallal GE(2000)Tartrate-resistant acid phosphatase 5b: a novel serum marker of bone resorption J Bone Miner Res 15 1337-1345

[20] Dawson-Hughes B(2010)Vitamin D and musculoskeletal health, cardiovascular disease, autoimmunity and cancer: recommendations for clinical practice Autoimmun Rev 9 709-715

[11] Vermeiden JP(2006)Effect of cholecalciferol plus calcium on falling in ambulatory older men and women: a 3-year randomized controlled trial Arch Intern Med 166 424-430

[12] van der Meer C(2007)Risk assessment for vitamin D Am J Clin Nutr 85 6-18

[13] Zittermann A(2011)The 2011 report on dietary reference intakes for calcium and vitamin D from the Institute of Medicine: what clinicians need to know J Clin Endocrinol Metab 96 53-58

[14] Scheld K(1991)The timed “Up & Go”: a test of basic functional mobility for frail elderly persons J Am Geriatr Soc 39 142-148

[15] Stehle P(2005)Better functional mobility in community-dwelling elderly is related to D-hormone serum levels and to daily calcium intake J Nutr Health Aging 9 347-351

[16] Zittermann A(2003)Determination of 25-hydroxyvitamin D in serum by HPLC and immunoassay Clin Chem 49 1521-1524

[17] Dawson-Hughes B(2004)An automated ‘bio-intact’ PTH assay: a step towards standardisation and improved correlation with parathyroid function in renal disease Clin Chim Acta 343 167-171

[18] Harris SS(1995)Monoclonal antibody assay for measuring bone-specific alkaline phosphatase activity in serum Clin Chem 41 1560-1566

[19] Dallal GE(2000)Tartrate-resistant acid phosphatase 5b: a novel serum marker of bone resorption J Bone Miner Res 15 1337-1345

[20] Dawson-Hughes B(2010)Vitamin D and musculoskeletal health, cardiovascular disease, autoimmunity and cancer: recommendations for clinical practice Autoimmun Rev 9 709-715