I know Dr. Gao for over 3 years, He is very kind but one of his staff sucks, I think her name is Sonya, everytime I ask her a queston, she replys back with a bad attitude, She is the living virus in Dr. Gao's office and Sonya seems like she is mad at the world, I dont think I can take the way she treat me anymore, sorry Dr. Gao but am taking my business somewhere else.