The Back Pain Revolution; WaddellG.1998. Churchill Livingstone, London.
2.
Myofascial Pain and Dysfunction. The Trigger Point Manual; SimonsD.G.TravellJ.G.SimonsL.S.vol 1Upper Half of Bodysecond ed1999. Williams & Wilkins, Baltimore.
3.
BartonN.J.HooperG.NobleJ.SteelW.M, 1992. Occupational causes of disorders in the upper limb; BMJ; 304:309–11.
4.
Neck and Back Pain The Scientific Evidence of Causes, Diagnosis and Treatment; ed NachemsonA.F.JonssonE.2000, pages 165–187. Lippincott Williams & Wilkins, Baltimore.
5.
PikeIRussoA.BerkowitzJ.BakerJ.P.LessowayV.A.1997, The prevalence of musculoskeletal disorders and related work and personal factors among diagnostic medical sonographers. Journal of Diagnostic Medical Ultrasoundvol 13219–227.
6.
GregoryV. 1999; Occupational health and safety update. Australian Sonographers association Sound Effects. Dec 1999, 42.
7.
MuirheadJ. 2001; New Zealand Sonographer-a survey of musculosketal problems in the workplace. Australasian society for Ultrasound in Medicine BulletinVol 4No 4. 23–25. Nov 2001.
8.
Sonographers' Work, Health & Disability Survey report March 1999. British Columbia Ultrasonographers' Society.
9.
VanderpoolH.E. 1993; Prevalence of carpal tunnel syndrome and other work related problems in cardiac sonographers. Journal of Occupational MedicineVol 35(6). 604–610.
10.
MagnivataN.BevilacquaI.PoalettaM.AdrianoF.NicoloC. 1999; Work related musculosketal complaints in sonologists. Jornal of Occupational and Environmental MedicineVol 41No 11981–988.
11.
The Gunn Approach to the Treatment of Chronic Pain, Chan GunnC.2nd ed1999, Churchill Livingstone, New York.
12.
Myofascial Pain and Fibromyalgia Syndromes A Clinical Guide to Diagnosis and Management, BaldryP.E.2001, Churchill Livingstone, London.
13.
A System of Orthopaedic Medicine, OmbregtL.BisschopP.J.ter VeerH.Van de VeldeT.1995, WB Saunders Company Ltd.London.
14.
Handbook of Osteopathic Technique, HartmannL. 3rd ed1997, Nelson Thornes Ltd.Cheltenham UK.