1. Vitamin D deficiency and secondary hyperparathyroidism in the elderly;Lips;Consequences for bone loss and fractures and therapeutic implications,2001
2. Vitamin D and the elderly;Mosekilde;Clin Endocrinol (Oxford),2005
3. Primary hyperparathyroidism;Heath H;Incidence, morbidity, and potential economic impact in a community,1980
4. Serum ionized calcium and the prevalence of primary hyperparathyroidism in age cohorts of 75, 80 and 85 years;Sorva;J Intern Med,1992
5. Primary hyperparathyroidism and the risk of fracture;Khosla;A population-based study,1999