You can view more details on each measurement unit: miles or km. The SI base unit for length is the metre. 1 metre is equal to 0.000621371192237 miles, or 0.001 km.
This fact has emboldened many to believe that the FDA will not take any action to remove Regenexx from the market despite its observations in 2008 that Regenexx appeared to violate the existing FDA regulatory framework.
The selective nature of the drug makes it preferable to other stress agents such as adenosine, which are less selective and therefore cause more side-effects. Regadenoson was approved by the United States Food and Drug Administration on April 10, 2008 and is marketed by Astellas Pharma under the tradename Lexiscan.