Hmmmm, well it could be a bit of incorrect HTML in there maybe?
Perhaps the easiest way to solve this would be to remove those three links, and add them again, if that's possible?
Removing the links and adding them again didn't work, unfortunately. You put me on the right track, though. I realised that there was, accidentally, at least one italicised letter in each of the relevant links and this seemed to be the problem. Thanks a lot!