Join the Goodreads Author Program

Are you M. Regina Castro, author of the books below?
Mayo Clinic The Essential Diabetes Book by M. Regina Castro Clínica Mayo. El libro esencial de la diabetes by M. Regina Castro


To join the author program as M. Regina Castro, you will first need to sign in to Goodreads. Then navigate back to this page to apply.


About the Author Program
Authors on Goodreads
Author Guidelines
Author Program How-To
Author & Advertisers Blog
Ask the Author: Featured Authors
About Goodreads