title: Cross-sectional and longitudinal studies of ageing. Ageing in bone as a model.
mesh_terms: D000365:Age Determination by Skeleton; D000368:Aged; D000375:Aging; D004032:Diet; D005260:Female; D006801:Humans; D008297:Male; D009747:Nutritional Physiological Phenomena; D010024:Osteoporosis / Q000209:etiology; D012737:Sex Factors