- Prostate cancer screening decisions: results from the National Survey of Medical Decisions (DECISIONS study). Hoffman, R.M., Couper, M.P., Zikmund-Fisher, B.J., Levin, C.A., McNaughton-Collins, M., Helitzer, D.L., VanHoewyk, J., Barry, M.J. Arch. Intern. Med. (2009)