However, the link does not now access the tool, but there is a 'contact us' facility on the website that it brings up. If no-one can help, perhaps the authors (who are on RG) could.
Otherwise, the author of the paper given to you above is on RG:
Thanks very much for your responses. The papers are really useful and I've managed to get the full questionnaire through one of the authors. It looks like just what we need for our study.