Age; median (range) in years 60 (42-95)
Gender; N (%)
  Males 7 (50)
  Females 7 (50)
Race; N (%)
  White 12 (86)
  Chinese 1 (7)
  African-American 1  (7)
Smoking history; N (%)
  Yes 7 (50)
  No 7 (50)
Alcohol history; N (%)
  Yes 6 (43)
  No 8 (57)
Follow-up; median (range) in months 28 (1-52)
N= number of patients; %= percentage
Table 1: Patient characteristics (N=14).