Calcium / British medical history / Humans / Female / Male / Hyperplasia / Alkaline phosphatase / Middle Aged / Adult / Public health systems and services research / BMJ / Phosphates / Chronic Kidney Failure / Renal Dialysis / Hyperplasia / Alkaline phosphatase / Middle Aged / Adult / Public health systems and services research / BMJ / Phosphates / Chronic Kidney Failure / Renal Dialysis