Nothing short of tested and retested unequivocal proof will ever set my mind at ease again.
I think that is perfectly understandable given your circumstances. I do know people who have been affected with SIDS - although they are not close family or friends of mine.
Even eliminating what I believe to be the major risk factors doesn't stop me from checking on my baby when he sleeps from time to time. I acknowledge that I cannot control all factors in the universe and that sometimes - bad things just happen for no apparent reason.
It is my belief however (after reading the book), that sudden infant death is largely preventable. It just made so much sense to me, you know - there was no mystery in it - once explained there was just no doubting that I was holding truth between the pages. So I just felt compelled to share what I know - I cannot expect that every parent or reader will feel the same way.
But if there is a possibility that this thread enlightens 1 person to aquire the info that inspires them to make changes that prevent a SIDS incident - I'm glad that I posted it.

Enough waffling now - my house is a mess!