Perhaps you can tell me a bit more about what you know about Sister Elizabeth Kenny.

So she's a fascinating character and born in 1880 in New South Wales, and she used to be known as the bush nurse.

And she arrived in-- She went to UK and then arrived in America in 1940.

And around that time, the specialty of PMR was developing.

Officially, it was recognized as a specialty in 1947 after the Second World War.

So we, as rehab physicians, owe our debt to Sister Kenny and the Second World War for development of this specialty because war victims limb loss and the specialty really took off.

So she is a v-very interesting character.

Perhaps you can tell me, so what are the late effects of polio or p- post-polio syndrome, and what's the criteria for it and diagnosis, and what actually do patients complain of?