Erkki Järvinen

Intercorrelation and test-retest reliability of the Pain Disability Index (PDI) and the Oswestry Disability Questionnaire (ODQ) and their correlation with pain intensity in low back pain patients.

M. Hupli, E. Karaharju, M. Grönblad, 1993, The Clinical journal of pain.

Relationship of the Pain Disability Index (PDI) and the Oswestry Disability Questionnaire (ODQ) with three dynamic physical tests in a group of patients with chronic low-back and leg pain.

M. Hupli, E. Karaharju, H. Hurri, 1994, The Clinical journal of pain.

Sphygmomanometer cuff size and the accuracy of indirect measurement of blood pressure

M. Karvonen, L. Telivuo, E. Järvinen, 1964 .