Calcium Absorption Varies within the Reference Range for Serum 25-Hydroxyvitamin D

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1997 • 1,477 citations

Hypovitaminosis D in Medical Inpatients

1998 • 1,447 citations

Effect of four monthly oral vitamin D3 (cholecalciferol) supplementation on fractures and mortality in men and women living in the community: randomised double blind controlled trial

2003 • 1,281 citations

Plasma calcidiol, season, and serum parathyroid hormone concentrations in healthy elderly men and women

1997 • 353 citations

Effects of Above Average Summer Sun Exposure on Serum 25-Hydroxyvitamin D and Calcium Absorption

2002 • 327 citations

Absorbability and Cost Effectiveness in Calcium Supplementation

2001 • 173 citations

The Importance of Calcium Intake For Lifelong Skeletal Health

2002 • 104 citations

Bioavailability of calcium supplements and the effect of Vitamin D: comparisons between milk, calcium carbonate, and calcium carbonate plus vitamin D

1996 • 63 citations

Calcium and Vitamin D in Osteoporosis: Supplementation or Treatment?

2002 • 15 citations