POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS that GSCP VI ADVISORS, L.L.C. (the “Company”) does hereby make, constitute and appoint each of Ronald L. Christopher, Dan Deluca, Robert Belva and Jeremy Kahn (and any other employee of The Goldman Sachs Group, Inc. or one of its affiliates designated in writing by one of the attorneys-in-fact), acting individually, its true and lawful attorney, to execute and deliver in its name and on its behalf whether the Company is acting individually or as representative of others, any and all filings required to be made by the Company under the Securities Exchange Act of 1934, (as amended, the "Act"), with respect to securities which may be deemed to be beneficially owned by the Company under the Act, giving and granting unto each said attorney-in-fact power and authority to act in the premises as fully and to all intents and purposes as the Company might or could do if personally present by one of its authorized signatories, hereby ratifying and confirming all that said attorney-in-fact shall lawfully do or cause to be done by virtue hereof.
THIS POWER OF ATTORNEY shall remain in full force and effect until either revoked in writing by the undersigned or until such time as the person or persons to whom power of attorney has been hereby granted cease(s) to be an employee of The Goldman Sachs Group, Inc. or one of its affiliates. The Company has the unrestricted right to unilaterally revoke this Power of Attorney.
This Power of Attorney shall be governed by, and construed in accordance with, the laws of the State of New York, without regard to rules of conflicts of law.
IN WITNESS WHEREOF, the undersigned has duly subscribed these presents as of September 24, 2010.
GSCP VI ADVISORS, L.L.C.
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| By: | /s/ Christine Vollertsen |
Name: Title: | Christine Vollertsen Vice President |