You might write write to Dr. Helander to purchase a copy directly. He is at <meghelander@netcabo.pt> and his web site is <www.EinarHelander.com>. Alternatively a hospital library could probably find you a copy somewhere in the US for inter-library loan.
The attached chapter, starting on p211 might be of interest re OPD and ER visits. If you used the one-page version of the ACE Questionnaire, and if it caused a measurable reduction in subsequent visits, you'd have a publishable article, regardless of whether you could enter the information in your ER notes.