Dear Sir.
I need to go to shanghai to get treatment for a crippling breathing disorder known as Empty Nose Syndrome. There are only two hospitals in the world currently offering treatment for this disorder and one happens to be in Shanghai while the other is in the US/Cleveland .

I am 26 year old and currently working as a software developer but getting treatment for this is the top priority.
I am not sure how it will be possible for me to get the visa as I see no medical category.
I have looked at the types of visa at the "Brief Introduction to Chinese Visa" link.

Can you please give advice on how it can be made possible for me to visit shanghai.

Thankyou