… ProQR to Present at Three Scientific Conferences in April … and CAMBRIDGE, Mass., April 22, 2019 (GLOBE NEWSWIRE) -- ProQR Therapeutics N.V. (Nasdaq:PRQR), a company dedicated to … K. Koenekoop, MD, PhD, principle investigator of the ProQR Phase 1/2 STELLAR clinical trial of QR-421a and …