Pacient Time Years Gender
2006 55 male
2006 43 female
2006 62 female
2007 58 male
2007 71 male
2007 60 male
2007 79 male
2007 75 female
2007 64 female
2008 66 female
2008 45 male
2008 73 male
2008 61 female
2008 77 female
2009 71 male
2009 53 male
2009 59 male
Time: year of the first surgery
Years: years old of the patients
Table 1: Dates of patients.