Has anyone tried this gallbladder cook book?

Hi,

Was looking in to cook books about diet and gallstones.

I found one on Amazon called 'Gallsone diet book for the newly diagnosed' by Dr Gina P Boon.

I googled Dr Gina P Boon but couldn't find anything from this person online, other than this book.

Does anyone know anything about this person or their book?

Thank you