Biofrontera announces preliminary unaudited sales revenue and updates consolidated net income guidance for the full year 2018 Ad-hoc Release pursuant to Art. 17 MAR Leverkusen, Germany, Jan. 22, 2019 (GLOBE NEWSWIRE) -- Biofrontera AG (NASDAQ ticker symbol: BFRA, ISIN: DE0006046113), an international biopharmaceutical...