Stage 0

Stage I

Stage II

Stage III

OLGA

OLGIM

OLGA

OLGIM

OLGA

OLGIM

OLGA

OLGIM

Number of cases

183

191

93

78

20

21

2

8

Average age (years)

51.07

51.04

50.36

49.69

50.95

51.90

51.50

54.50