Original sentence: Iontophoresis, ultrasound, thermotherapy, pressotherapy (pneumatic massaging in the direction of the circulation), lymphatic drainage (massage technique to stimulate lymphatic flow), electrolipophoresis (application of a low frequency electric current) have all been tried
Edited sentence: Iontophoresis, ultrasound, thermotherapy, pressotherapy (pneumatic massaging in the direction of the circulation), lymphatic drainage (massage technique to stimulate lymphatic flow), electrolipophoresis (application of a low frequency electric current) and high requency (such as radia frequency)electric current have all been tried