NEW YORK--(BUSINESS WIRE)--Burson-Marsteller, a leading global public relations and communications consultancy, today announced Helene Ellison has been appointed Global Chair of the firm\'s Healthcare Practice. Ellison is a veteran of the healthcare and pharmaceutical communications industry with expertise in corporate positioning, product lifecycle and regulatory communications, media relations, strategic alliance building and crisis management, and she brings nearly 30 years of experience to he
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