發送短信 : The functional status of elderly Chinese 75 years and older.

 _    _     ______   ______      ___     _    _   
| \  / ||  /_   _// |      \\   / _ \\  | |  | || 
|  \/  ||   -| ||-  |  --  //  | / \ || | |/\| || 
| .  . ||   _| ||_  |  --  \\  | \_/ || |  /\  || 
|_|\/|_||  /_____// |______//   \___//  |_// \_|| 
`-`  `-`   `-----`  `------`    `---`   `-`   `-`