Serendipity and the parathyroid glands.
D002116:Calcitonin / Q000502:physiology; D002118:Calcium / Q000378:metabolism*; D006801:Humans; D006934:Hypercalcemia; D006961:Hyperparathyroidism / Q000175:diagnosis*; D006996:Hypocalcemia; D010281:Parathyroid Hormone / Q000502:physiology; D014807:Vitamin D / Q000502:physiology
D010281:Parathyroid Hormone; D014807:Vitamin D; D002116:Calcitonin; D002118:Calcium