發送短信 : Postural stability of workers exposed to lead

 _    _      ___     _    _     _____    __   __  
| |  | ||   / _ \\  | || | ||  |  ___||  \ \\/ // 
| |/\| ||  | / \ || | || | ||  | ||__     \   //  
|  /\  ||  | \_/ || | \\_/ ||  | ||__     / . \\  
|_// \_||   \___//   \____//   |_____||  /_//\_\\ 
`-`   `-`   `---`     `---`    `-----`   `-`  --`