SF-12 Health Survey
Ware and colleagues developed the SF-12, a shortened version of the 36-item short-form (SF-36) health survey, to measure physical and mental health in studies with large samples or constraints on questionnaire length.
Ware Jr., J. E., Kosinski, M., Keller, S. D. (1996). A 12-item short-form health survey: Construction of scales and preliminary tests of reliability and validity. Medical care, 34(3), 220-233.