1. Aukland K (1987) Interstitial fluid balance in experimental animals and man. In: Staub NC, Hogg JC, Hargens AR (eds) Interstitial-lymphatic liquid and solute movement. Karger, Basel, pp 110?123
2. Bakke M, Tuxen A, Vilmann P, Jensen B, Vilmann A, Toft M (1992) Ultrasound image of human masseter muscle related to bite force, electromyography, facial morphology, and occlusal factors. Scand J Dent Res 100:164?171
3. Bjelle A, Hagberg M, Michaelsson G (1981) Occupational and individual factors in acute shoulder-neck disorders among industrial workers. Br J Ind Med 38:356?363
4. Reports from the Institute of Applied Psychology;G Borg,1979
5. Conover WJ (1980) Practical nonparametric statistics. 2nd edn. Wiley, New York