Doctor to choose in Tijuana ?

Any luck finding the right doctor for DS? Dr. Francisco Zavalza does it, I know for sure (he did my sleeve, but he does bypass, mini-bypass and DS too). But when I was making my research last year and talked to him about it, he said that it is a pretty rare procedure, you really have to qualify for it. It is recommended for very obese patients with serious co-morbidity... Have a consultation with several doctors (usually its free) before making a final decision.