發送短信 : Personal inhalation exposure to polycyclic aromatic hydrocarbons and their nitro-derivatives in rural residents in northern Thailand

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