Well by my experience, and because I went there Santa Cruz , Bolivia is the best place to go, I went with a very professional organization Makeover Travel, their clinics are very nice, the doctors and medical staff are so prepared!!
It s so good that probably even if you want to go, some months they are full without space, like in my case I had to wait 2 months to take 15 days holiday because they had no places, but it worth it believe me, you are not afraid about anything because you know you have a surgical guarantee with them so you feel so safe, definitely go there!