Some of the major players include IHS (NYSE:IHS), Reed Elsevier Group and Allscripts Healthcare Solutions (Nasdaq:MDRX).

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It was a muddle from day one: The London-listed Reed Elsevier Plc. owns 50% of the operating company, Reed Elsevier Group, and 5.8% of the Amsterdam-listed Reed Elsevier NV, which owns the other 50% of the operating company.

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It was a muddle from day one: London-listed Reed Elsevier Plc owns 50% of the operating company, Reed Elsevier Group, and 5.8% of the separately Amsterdam-listed Reed Elsevier NV, which in turn also owns the other 50% of the operating company.

FORBES: Double Dutch No Longer