Thank you! I knew very little about shortcodes but I managed to figure out how to do this with your plug in.
[catlist name=clinical orderby=title order=asc numberposts=-1 template=default content=yes catlist thumbnails=yes]
It worked (except for the thumbnail part).
I made a donation but I probably made a fool of myself trying to write a thank you note in Spanish. ("Gracias por un excelente 'plugin'")