Text this: Prognostic factors and survival of patients with carcinoma of the ampulla of vater after pancreaticoduodenectomy

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