The following table has been compiled according to the recommendations of Robert Gerwin MD, Pain and Rehabilitation Medicine, Bethesda, MD; Tim Taylor, MD and Anna Bittner, MD, of Pain Relief Home, Richmond, VA. Support studies are quoted in the text books ‘Myofascial Pain and Dysfunction’ by Travell & Simons, ‘Trigger Point Therapy for Low Back Pain’ by Sauer & Biancalana and ‘Myofascial Trigger Points’ by Dommerholt & Huijbregts.