This might become a breakthrough, eventually. Sorry for the hyperbolic headline - this is a first step only, but I feel it is a significant one.
Harrington, Carmel Therese et. al.: Butyrylcholinesterase is a potential biomarker for Sudden Infant Death Syndrome. In: The Lancet eBioMedicine.
Pinging @docosc in his professional capacity: I hope you enjoy this piece and it makes your professional life a bit better.