The books were actually collections of a "Talking about Medicine" column appearing on a monthly journal published by S.U.C.C.E.S.S.  The main contributor was Dr. Anthony Cheung, a well known cardiologist in H.K.who retired to live in Vancouver since 1984.  They were published to help to raise funds for the non-profit association of the the Chinese community.
I am responsible for drawing some of the pictures; but they had all been retouched by professionals when the books were published.
                                                          ---  part of a note from Liu.   (who is ever so modest. ^_^)