回复：卫生部开具证明

Why J1?
It will definitely ruin your life. You will not get J1 waiver from Chinese government. The only way to get rid of this burden is working in certain underserved area for couple years. After that, need more years to get GC if there is no quota limitation at that time. Do you think you won't be trapped in the poor place in the reset of your life?
Find another way to get GC first.