[Safety of metformin in the treatment of elderly type 2 diabetes mellitus].

Objective: To evaluate the safety of metformin in the treatment of elderly type 2 diabetes mellitus (T2DM).

Methods: Two hundred and forty-three cases of elderly T2DM hospitalized from Jan. 1996 to Dec.

[A preliminary survey of primary hyperparathyroidism in middle-aged and elderly Beijing Chinese].

Objective: To study the prevalence of hypercalcemia and primary hyperparathyroidism in middle-aged and elderly Chinese people who live in Beijing.

Methods: This research was performed in a large elderly population group who came to our hospital for health checkup. The medical histories and relevant data of all the subjects were collected.