A visit to an ER after a Montana concert and follow-up treatment at a Spokane, Washington hospital did not solve the blood clot problem for Zakk Wylde.  Now hosptialized in Eugene, Oregon, Wylde has been forced to cancel the remainder of his Black Label Society tour while doctors seek to solve the problem.  A post on the Twitter account tied to the guitarist said that blood clots had been detected in both lungs as well as a leg.