OP here. Sorry about the editorialization but the original title would be extremely puzzling to the HN crowd without a medical background, and it didn't fit the

OP here. Sorry about the editorialization but the original title would be extremely puzzling to the HN crowd without a medical background, and it didn't fit the space constraints for titles in the first place. Moderators, feel free to change the title to something more acceptable (I didn't manage to find a readable headline by leaving out words).