Management also compares revenues on an "organic constant currency basis," which is a non-GAAP financial measure. This measure excludes the effect of acquisitions by removing revenues from an acquired company in the twelve months after completing an acquisition and foreign currency exchange rate fluctuations by translating current period revenues into U.S. dollars at the weighted average exchange rates of the prior period of comparison. Because EPAM's reported non-GAAP financial measures are not calculated in accordance with GAAP, these measures are not comparable to GAAP and may not be comparable to similarly described non-GAAP measures reported by other companies within EPAM's industry. Consequently, EPAM's non-GAAP financial measures should not be evaluated in isolation or supplant comparable GAAP measures, but rather, should be considered together with the information in EPAM's consolidated financial statements, which are prepared in accordance with GAAP.