The World Health Organization Health and Work Performance Questionnaire (HPQ)
Kessler RC, Barber C, Beck A, Berglund P, Cleary PD, McKenas D, Pronk N, Simon G, Stang P, Ustun TB, Wang P. The World Health Organization Health and Work Performance Questionnaire (HPQ). Journal Of Occupational And Environmental Medicine 2003, 45: 156-174. PMID: 12625231, DOI: 10.1097/01.jom.0000052967.43131.51.Peer-Reviewed Original Research