發送短信 : Thunderclap headache syndrome presenting to the emergency department: an international multicentre observational cohort study.

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