Which preposition to use with mortems

of Occurrences 9%

Post mortems of those who have died while intoxicated show a larger amount of alcohol in the liver than in any other organ.

on Occurrences 4%

It looked as if he and Thorndyke were contemplating a few private executions with subsequent post-mortems on the victims.

in Occurrences 1%

Et respondit mihi quod sunt animæ nobilium virorum, quas nos hic pascimus amore Dei, qui regit orbem, et sicut vnus homo fuit nobilis, ita anima eius post mortem in corpus nobilis animalis intrat.

per Occurrences 1%

Spiritualem animam a reliquis distinctam tuetur, etiam in cadavere inhaerentem post mortem per aliquot menses.

Which preposition to use with  mortems