谁能帮我分析一下这个句子结构

Little wonder then that in the systems of the hospital it is the physician who is the real "comsumer".
这里的 it is 和 that 可是够成强调句型？
不是的话 it 又是指代什么？

这句是有强调句型，但不是it is 和 that ，而是it is与who
其实这句就是一个宾语从句套一个强调句型
主干是
Little wonder that the physician is the real "comsumer".
that 后面全是wonder的宾语从句
in the systems of the hospital是地点状语，不去问它，对physician进行强调，就是it is the physician who is the real "comsumer".

最后的句子是
Little wonder then that in the systems of the hospital it is the physician who is the real "comsumer".
所以it 就是强调句型，并不指代什么

把IT IS 去掉看看缺成分不````如果缺就不是什么强调句
我看这是个主语从句‘‘IT指代前面的主语从句‘‘‘