I think it should stay but you might want to try and edit it so that it is clear that ALS is the type of MND which differentialyl affects the upper and lower motor neurones. But yes Jooler I agree that there will become a split between editors from each side of the Atlantic. TBH I only have time to work on MND not ALS as well as it is, as you say, duplicative and not worth my time justifying my edits to two sets of editors. I'm not convinced by merge, nor delete, but I'd prefere a BOLD edit to make it clearer. The worst that can happen is someone can revert some of them, why not give it a go?   