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Ferrie, J., M. Kivimaki, J. Head, M. Shipley, J. Vahtera, και M. Marmot. A Comparison of Self-reported Sickness Absence With Absences Recorded in Employers' Registers: Evidence From the Whitehall II Study. BMJ Group, 2005.

Ferrie, J., et al. A Comparison of Self-reported Sickness Absence With Absences Recorded in Employers' Registers: Evidence From the Whitehall II Study. BMJ Group, 2005.