File of a logo of bio pharmaceutical company Merck Serono SA is pictured outside the company headquarters in Geneva

Reuters
File of a logo of bio pharmaceutical company Merck Serono SA is pictured outside the company headquarters in Geneva
A logo of bio pharmaceutical company Merck Serono SA is pictured outside the company headquarters in Geneva, in this April 24, 2012 file photo. REUTERS/Valentin Flauraud/Files
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