I was seeing Dr. Doo for IVF. Now that I am pregnant (after 3 IVF) I'm seeing Dr. Mok instead.
Dr. Doo is indeed always very busy but he does what's must be done, very direct to the point, efficient, just my impression.
I'm seeing Dr. Mok now because she is less busy, takes time to talk to you, dedicated. She took such a good care of me when Dr. Doo was out of town (she was covering his patients during the time).