Table 1. Summary of subjects and studies.

study	center	age (years)	gender (f/m)	N	Responder rate	initially published in
A	Freiburg	69.6 ± 5.7	19/9	28	53.6% (15)	Lahr et al. [30]
B	Freiburg	24.0 ± 2.0	14/18	32	62.5% (20)	Klöppel et al. [29]
C	Münster	49.9 ± 8.3	8/4	12	16.7% (2)	List et al. [24]
D	Münster	70.5 ± 3.6	10/10	20	80% (16)	List et al. [26]
E	Berlin	63.6 ± 12.8	4/6	10	60% (6)	List et al. [28]
F	Berlin	65.3 ± 5.2	12/8	20	35% (7)	Unpublished
G	Berlin	63.9 ± 6.2	16/14	30	60% (18)	List et al. [27]
H	Berlin	25.8 ± 5.9	2/21	23	52.2% (12)	Unpublished
I	Berlin	64.3 ± 6.1	7/8	15	33.3% (5)	Unpublished
∑			92/98	190