I would recommend to anyone reading this to do so...
I was chatting to one the enthusiastic young volunteers at the 'marrow
clinic' and she told me that they don't actually have to 'Drill' your
bones. They can do something called a blood stem cell donation; over
the course of a few days they give you several injections and take blood
stem cells, found in abundance in your bone marrow, from your blood, but
it does take a few goes to get enough. The decision to do a blood stem
cell donation rests solely on the clinician. They may be so inclined as
to do a bone marrow donation, in which they use a 'slightly bigger than
normal' needle, which they stick into your pelvis while under anaesthetic and
extract some of your marrow. Nothing to it really.... and not a Bosch in
sight..... it could save someones life!