more questions for Dr.Sutters

i'm looking for a different chiropractor because of the commute. i found one that's about an hr ride. that's not too bad. i use mass transit. they use different techniques though. what's the difference between NUCCA and Atlas Orthogonal. I looked it up, but i still can't seem to find the difference? the practitioner i plan on switching to uses AO, but the one i saw yesterday uses NUCCA. are they both equally effective? i cant call the AO guy today because he's off.