An investigation into the incidence of stress fractures in military recruits, anatomical distribution of the lesions and bone density, and the plasma levels of calciotropic hormones Scintigraphic versus angiographic evaluation of myocardial perfusion The effect of 123I-labelled phenyl-acetate on malignant neoplastic tumor Investigation of the effects of hyperparathyroid hypercalcaemia and cancer-associated hypercalcaemia on gastrin, vit D, IL-6 and C-peptide The effect of imaging time on the radioscintigraphic study of the parathyroids Injection of radiotracer, imaging time points and defection of parathyroid adenomas Focal brain lesion, partial epilepsy, conversion disorder and calcium blocker