回複：又見melly好文。

Thanks for your long term support. GC means genetic counseling/counselor. In the video you posted, she mentioned counseling before taking any test. That's what genetic counseling means. I am in this program now. Hopefully I am one of GCs soon.

This is not a book review. Just a journal of sharing some thoughts. I am taking opportunities to practice my Chinese-English too.

Million thanks.