SOFIA (Bulgaria), October 29 (SeeNews) - Bulgarian drug trader Sopharma Trading [BUL:SO5], a unit of local drug maker Sopharma [BUL:3JR], signed a 2.5 million levs ($1.5 million/1.3 million euro) deal with local Stoyan Kirkovich hospital, the Stara Zagora-based medical institution said on Thursday.