1. Heyman SN, Michaeli J, Brezis M, Gezlan L, Lernau O (1986) Case report: Primary hyperparathyroidism presenting as cervical myopathy. Am J Med Sci 291:112?114
2. Nichols G Jr, Flanagan B (1967) Normocalcemic hyperparathyroidism. Trans Assoc Am Physicians 80:314
3. Yendt ER, Gagne RJA (1968) Detection of primary hyperparathyroidism, with special reference to its occurrence in hypercalciuric females with normal or borderline serum calcium. Can Med Assoc J 98:331?336
4. Wills MR (1971) Normocalcemic primary hyperparathyroidism. Lancet I:849?852
5. Johansson H, Thorein L, Werner I, Grimelius L (1975) Normocalcemic hyperparathyroidism, kidney stones, and idiopathic hypercalciuria. Surgery 77:691?696