Table 1. Demographic data of study cohort.

Mean agea	47.4±17.5
Range yearsa	9–93
Gender
Male	429
Female	311
Not known	15
Country of residence
Germany	587
Italy	69
France	35
Belgium	12
UK	9
Israel	7
The Netherlands	4
Spain	2
Other	30

^arelated to birth date and not to age at recruitment