/jp/ - Otaku Culture

ほしみ。。
Learned that ところ can be used to refer to a place in time.
What is the は doing in
>入院しては退院して
It's translating to mean and but I can't find a reference to は being used like that.
Full sentence:
>私ね、ちょっと病気がちなところがあって、入院しては退院してを繰り返してた時期があったの