Table 1.

Characteristics of the publications.

Authors	Single/Multi-Center	Follow-Up	n Total	n Switch	Both Genders	Classic and Later-Onset
Hughes et al. [13]	Multicenter	18 months	52	34	Yes	Yes
Müntze et al. [18]	Single-center	12 months	14	6	Yes	Yes
Feldt-Rasmussen et al. [19]	Multicenter	12 months	46	15	Yes	Yes
Riccio et al. [20]	Single-center	12 months	7	7	No	Yes
Lenders et al. [21]	Multicenter	24 months	54	33	Yes	Yes