Analysis of difficult and complicated cases in head and neck surgery 并列题名:Analysis of difficult and complicated cases in head and neck surgery Difficult and complicated cases in refractive surgery 并列题名:Difficult and complicated cases in refractive surgery Analysis of difficult cases in endodontic microsurgery Analysis of clinical diagnosis and treatment cases in ear, nose, throat, head and neck surgery 并列题名:Analysis of difficult cases in endodontic microsurgery