Table 1.

Overview of the available samples for first- and second-generation TEHVs. (*) Unpublished data derived from an independent pilot study, in which TEHVs were cultured using the same culture conditions.

Geometry	Follow-up
	Acute (= control)	8 weeks	16 weeks	24 weeks	52 weeks (= 1 year)	Total
First-generation	n = 2	n = 2	n = 4	n = 4	n.a	12
Second-generation	n = 2*	n = 3*	n.a	n.a	n = 3	8