Colombia does not yet have such basic population studies either. Aside from the study of Dr. Juliao and his colleagues presented in this issue, we have only one previous study done in Bogota in 1991 16.
En Colombia tampoco disponemos de estos estudios y aparte del estudio de Juliao y cols que presentamos en este número, solo tenemos un estudio previo realizado en Bogotá en 1991 16.