發送短信 : Association of built environment with walking distance to public transit stops in Hanoi

           __   __    ______    _____     _____   
    ___    \ \\/ //  /_   _//  |  ___||  |__  //  
   /   ||   \ ` //     | ||    | ||__      / //   
  | [] ||    | ||     _| ||    | ||__     / //__  
   \__ ||    |_||    /__//     |_____||  /_____|| 
    -|_||    `-`'    `--`      `-----`   `-----`  
     `-`