You Americans, please refrain. I already know which manual you use. As a consolation prize, you can complete the one-item trivia poll just below the diagnostic survey. Make your best guess, and instantly learn how others voted.
And if you could pass this along to other colleagues outside of the United States, I would greatly appreciate it. Here's a convenient url that you can just cut and paste to share: http://3.ly/diagnosis. Or, if you would like to bypass this blog page and go directly to the survey site, you can use this url: http://3.ly/diagnosis2.
Thank you very much for your help.
And now, the one-item consolation poll for all readers: