"Undetermined" with lethal blood levels of opioids and acute myocardial infarction sounds to me a lot more like "either the heart attack or the overdose killed

"Undetermined" with lethal blood levels of opioids and acute myocardial infarction sounds to me a lot more like "either the heart attack or the overdose killed him, I'm not sure which" than it does "actually, he died from neurotoxins he was exposed to 50 days before which I conveniently left out of the death report". The only source used to even claim the connection is a doctor whose major paper on the subject tries to call itself "significant" despite having obviously non-significant p-values. [1]: http://bleedfree.eu/wp-content/uploads/2015/10/Cognitive-impairment-and-associated-loss-in-brain-white-microstructure-in-aircrew-members-exposed-to-engine-oil-fumes.pdf http://bleedfree.eu/wp-content/uploads/2015/10/Cognitive-imp...