A study conducted in coordination with the University of Michigan Health Service – scheduled for publication in the December 2009 "American Journal of Roentgenology" – warned that H1N1 flu can cause pulmonary embolism, surmised as a leading cause of death in this pandemic. The study authors suggest physician evaluation via contrast enhanced CT scans for the presence of pulmonary emboli when caring for patients diagnosed with respiratory complications from a "severe" case of the H1N1 flu. However pulmonary embolism is not the only embolic manifestation of H1N1 infection. H1N1 may induce a number of embolic events such as myocardial infarction, bilateral massive DVT, arterial thrombus of infrarenal aorta, thrombosis of right external iliac vein and common femoral vein or cerebral gas embolism. The type of embolic events caused by H1N1 infection are summarized in a 2010 review by Dimitroulis Ioannis et al.