回复：重新看了你的原贴，有个问题。

We see specialist when my son is healthy and do the test. When he had asthma attack, we saw regular pediatrician, given instruction, but no test. We never see specialist before and did not know we need to. We were referred to the specialist because even a tiny cold would trigger my son's asthma and she wanted to know more, and then we just found the lung problem.I don't know why here it is very hard to make an appointment with the specialist. Like last time we saw the specialist in Dec. Even he mentioned my son's lung function is bad, he wanted us to see him in March after CT.