It is said that for male patients you have to needle the Master Point on the left side and the Coupled Point on the right( for female patients it is said to be the reverse). For example, for Du Mai vessel you needle Master Point SI 3 on the left side and then the Coupled Point UB 62 on the right side, as said. My question is, does this kind of one sided needling create any left-right disharmony or it is all right to do as said?Or, there is any other method of using the Extraordinary Vessels? Thanks