Epidemiological methods : the effect of envelope type on response rates in epidemiological study of back pain.
Prognostic factors for long-term sickness absence among employees with neck, shoulder and low-back pain.
The association of adolescent spinal-pain-related absenteeism with early adulthood work absenteeism : a six-year follow-up data from a population-based cohort.
Combined psychosocial work factors and risk of long-term sickness absence in the general working population : prospective cohort with register follow-up among 69371 workers.
Does occupational forward bending of the back increase long-term sickness absence risk? A 4-year prospective register-based study using device-measured compositional data analysis.