The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which	of	the	following	is	associated	with	a	low concentration of ionized calcium in the serum?   (A) Hypothyroidism   (B) Osteogenesis imperfecta   (C) Paget's disease of the bone   (D) Tetany
['(D) Tetany <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) Hypothyroidism \n (B) Osteogenesis imperfecta \n (C) Paget's disease of the bone \n (D) Tetany <> possible answers", '  Which\tof\tthe\tfollowing\tis\tassociated\twith\ta\tlow\nconcentration of ionized calcium in the serum? <> context@']