Medical advances that include
surgery
Medicine and medical science is quite advanced for a DND world. Mul are completely immune to magical healing and there are so few spell casters that concentrate on healing that it is super rare. Most towns will have a doctor/pharmacist. Cities will have doctors and even hospitals. Most hospitals will include their own storm bunker.
Hospitals
I have not done the work here to figure out these can help the party, but this is a place where wound points and lingering effects can be worked on in a faster manner.