P. Helin

Impact of regular relaxation training and psychosocial working factors on neck-shoulder tension and absenteeism in hospital cleaners.

H. Toivanen, O. Hänninen, O Hänninen, 1993, Journal of occupational medicine. : official publication of the Industrial Medical Association.

Levamisole in a double-blind study: no effect on warts.

M. Schou, M. Schou, P. Helin, 1977, Acta dermato-venereologica.

Letter: Levamisole for warts.

P. Helin, M. Bergh, 1974, The New England journal of medicine.

Shoulder strain in keyboard workers and its alleviation by arm supports

O. Hänninen, T. Sihvonen, Osmo Hänninen, 1988, International archives of occupational and environmental health.

Responses of the autonomic nervous system during periods of perceived high and low work stress in younger and older female teachers.

Veikko Louhevaara, Tiina Ritvanen, T. Ritvanen, 2006, Applied ergonomics.

Relaxation training affects success and activation on a teaching test.

O. Hänninen, P. Helin, Pertii Helin, 1987, International journal of psychophysiology : official journal of the International Organization of Psychophysiology.

Human urinary biogenic amines and some physiological responses during situation stress.

M. Härkönen, J. Laakso, K. Kuoppasalmi, 1988, International journal of psychophysiology : official journal of the International Organization of Psychophysiology.

Effect of aerobic fitness on the physiological stress responses at work.

T. Halonen, T. Ritvanen, V. Louhevaara, 2007, International journal of occupational medicine and environmental health.