Serum vitamin D level after an annual intramuscular injection of ergocalciferol

The Vitamin D Endocrine System: Steroid Metabolism, Hormone Receptors, and Biological Response (Calcium Binding Proteins)*

1982 • 698 citations

The Effect of Vitamin D Supplementation on Vitamin D Status and Parathyroid Function in Elderly Subjects*

1988 • 386 citations

VITAMIN-D STATUS IN LONG-STAY GERIATRIC PATIENTS

1975 • 128 citations

Vitamin D Deficiency in Welfare Institutions for the Aged

1980 • 64 citations

ELEVATED SERUM INTACT PARATHYROID HORMONE LEVELS IN ELDERLY PATIENTS WITH HIP FRACTURE

1989 • 54 citations

An improved method for routine determination of vitamin D and its hydroxylated metabolites in serum from children and adults

1981 • 52 citations