An Exploratory Study of PQ Grass 27600 SU

Smith Allergy & Asthma Specialists, Cortland

Corning Center for Clinical Research, Horseheads

Chesapeake Clinical Research, Inc., White Marsh

Allergy Partners of Western North Carolina, Asheville

Allergy and Asthma Associates of Bluegrass, Lexington

Bernstein Clinical Research Center, LLC, Cincinnati

Allergy Asthma & Sinus Center, S.C., Greenfield

Atlantic Research Center, LLC, Ocean Township

Universitatsmedizin Berlin - Charite Campus Mitte - Allergie Centrum Charite, Berlin

Universitätsklinikum Carl Gustav Carus an der TU Dresden, Dresden

ENT RESEARCH - Institut für klinische Studien, Essen

Medaimun GmbH, Frankfurt am Main

Hamburger Institut für Therapieforschung GmbH, Hamburg

Studienzentrum Dr. Sabine Laßmann, Saalfeld