Routine can be done anywhere, and people go "anywhere". Fine. Specialty is mainly best in USA [1][2][3][...many more...]. So let's not ruin it, maybe?
[1] https://www.beckershospitalreview.com/oncology/worlds-top-on...
[2] https://health.usnews.com/best-hospitals/pediatric-rankings/...
[3] https://www.magazine.medicaltourism.com/article/best-countri...