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            ______  __    __   __   __    ______  
  ____     /_   _// \ \\ / //  \ \\/ //  /_____// 
 |    \\    -| ||-   \ \/ //    \ ` //   `____ `  
 | [] ||    _| ||_    \  //      | ||    /___//   
 |  __//   /_____//    \//       |_||    `__ `    
 |_|`-`    `-----`      `        `-`'    /_//     
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Text this: Antibodies against citrullinated proteins in relation to periodontitis with or without rheumatoid arthritis: A cross-sectional study