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. 2014 Jul 3;7:416. doi: 10.1186/1756-0500-7-416

Table 3.

Conclusion table

  QTH LED (Conventional) LED (pulse delay) LED (ramped)
QTH
-
S
S
S
LED (Conventional)
S
-
S
S
LED (pulse delay)
S
S
-
NS
LED (ramped) S S NS -