If someone has WLS out of the country, where do they go for follow up care and tests?

If a person has WLS outside of the country, where does that person go for follow up care? I understand many U.S surgeons have concerns about patients going to third world countries for surgeries. Concerns about safety etc. I actually understand these concerns. I see many bariatric Dr's stating they will not provide aftercare for patients who went out of the US. Some say they will provide aftercare to patients who had surgery by another US Dr. What's the difference?

No doctor answers yet