Media type: E-Article Title: Plasma levels of parathyroid hormone, vitamin D, calcitonin, and calcium in association with endurance exercise Contributor: Klausen, Tom; Breum, Leif; S�rensen, Henrik Ancher; Schifter, S�ren; Sonne, Bente imprint: Springer Science and Business Media LLC, 1993 Published in: Calcified Tissue International Language: English DOI: 10.1007/bf00298719 ISSN: 1432-0827; 0171-967X Keywords: Endocrinology ; Orthopedics and Sports Medicine ; Endocrinology, Diabetes and Metabolism Origination: Footnote: