Table 2. Ranking of the pulsed electric field parameters’ effects on collagen increase two months after pulsed electric field administration, according to Taguchi analysis.

Level	Voltage <S/N> 3weeks	Pulse Length (us) <S/N> 3 weeks	Number of pulses <S/N> 3 weeks
1	14	20	18
2	17	25	11
3	19	16	17
4	19	17	19
5	24	15	24
Δ	10	10	13
Rank	2	2	1