Table 1 Sample characteristics

n

Gender

 Male

40

 Female

16

Specialist field

 General Practitioners

30

 Pulmonologist

5

 Cardiologist

5

 Neurologist/Psychiatrist

4

  (Haemato-)Oncologist

4

 Rheumatologist

3

 Gastroenterologist

2

 Nephrologist

1

 General internist

1

 Surgeon

1

Age group

 30 – 40 years

2

 41 – 50 years

17

 51 – 60 years

20

 over 60 years

16

Practice type

 Single practice

28

 Group practice

20

 Other^a

8

Practice location

 Rural area^b

8

 Small/medium town^c

29

 City^d

19

Employment type

 Full-time

25

 Part-time

3