What do a pulmonary embolism and oil field sludge have in common? Find out in Dr. Mark Hill's interview with Dr. Lazar Greenfield, renown surgeon and inventor of the Greenfield Filter.
What do a pulmonary embolism and oil field sludge have in common? Find out in Dr. Mark Hill's interview with Dr. Lazar Greenfield, renown surgeon and inventor of the Greenfield Filter.