回复：it's truely subject to doctor's judgement. showing the cdc re

You are right. Perfectly right.I will try to get my primary doctor to write a letter for it. Here are more info about this::I asked that if my primary doctor writes me a letter , if she will sign for me, she said my primary won't be able to say I am normal without the sputum test because the size 40mm is too big. She threatened that if I file like this , I will be marked by US health system and will be a trouble for me(don't know if this is true). She said I better start to take medicine for it and several years later the size could be smaller. Thanks