Cite
HARVARD Citation
Petersen, M. et al. (1983). Parathyroid hormone and 25-hydroxyvitamin D concentrations in sick and normal elderly people.. BMJ. 287 (6391), pp. 521-523. [Online].
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Petersen, M. et al. (1983). Parathyroid hormone and 25-hydroxyvitamin D concentrations in sick and normal elderly people.. BMJ. 287 (6391), pp. 521-523. [Online].