title: Seasonal variation in bone turnover: dependence on calcium nutrition.
authors.forename: A
authors.initials: A
authors.lastname: Zittermann
mesh_terms: D000596:Amino Acids / Q000097:blood; D015415:Biomarkers; D001862:Bone Resorption / Q000378:metabolism*; D002112:Calcifediol / Q000097:blood; D002117:Calcitriol / Q000097:blood; D002118:Calcium / Q000378:metabolism*; D002940:Circadian Rhythm; D005260:Female; D006801:Humans; D010281:Parathyroid Hormone / Q000096:biosynthesis; D010446:Peptide Fragments / Q000097:blood; D011347:Procollagen / Q000097:blood; D012621:Seasons; D014807:Vitamin D / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D015415:Biomarkers; D010281:Parathyroid Hormone; D010446:Peptide Fragments; D011347:Procollagen; C042813:procollagen type I carboxy terminal peptide; D014807:Vitamin D; C036020:deoxypyridinoline; D002117:Calcitriol; D002112:Calcifediol; D002118:Calcium