14% of the US population is black, whereas 0.001% of the US is a zookeeper. So, I'd imagine that the bar for mentioning a particular group most affected by a di

14% of the US population is black, whereas 0.001% of the US is a zookeeper. So, I'd imagine that the bar for mentioning a particular group most affected by a disorder is somewhere between 14% and "so low as to be a rounding error." If there are relevant factors that are associated with a particular disorder, mentioning that fact seems pretty relevant. This is particularly true for something as complex as a transplant, where the difference between rejection and non-rejection is small.