title: Calculation of active formation period using label escape and three labels.
authors.affiliation: University of Washington, Seattle.
authors.forename: S M
authors.initials: SM
authors.lastname: Ott
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001846:Bone Development / Q000502:physiology*; D003627:Data Interpretation, Statistical; D005260:Female; D006801:Humans; D008875:Middle Aged; D013499:Surface Properties; D013752:Tetracycline
chemical_list: D013752:Tetracycline