發送短信 : Rate of decline of antibody titers to pandemic influenza A (H1N1-2009) by hemagglutination inhibition and virus microneutralization assays in a cohort of seroconverting adults in Singapore

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