| http://www.w3.org/ns/prov#value | - Because the prevalence of EHPVO is the highest in developing countries and the condition affects mainly the poor [2, 19], most of whom do not have access to blood transfusion facilities and are not treatment compliant, the benefits of using a less invasive procedure like endoscopic therapy must be weighed against surgery which, in the best centres carries an operative mortality of 1%, is a onetime
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