I am sure Buglet's friends enjoyed the snowmen! My dad is at the hospital almost every day for radiation or chemo, acupuncture, blood drawing or something else. They were blessed to find an amazing place for his treatment, and they are grateful for all the staff, like you are. They brought 2 dozen donuts to the parking valets, the biggest box of assorted chocolates I have ever seen for the staff in the phlebotomy clinic (mom paid $15 in the commissary for this), small boxes of chocolate for other staff. My mom found him a santa shirt and he wore his santa hat and had a lot of fun with it. I hope your Buglet had as much fun as my dad did delivering his goodies!
I hope mayo clinic has good answers for you.