TY - GEN AU - Fernández-Rivas,M AU - Brewczynski,P Z AU - Kroon,A M AU - van Ree,R TI - A clinical trial with purified natural major allergens from grass pollen SN - 0936-8671 PY - 2001///0906 KW - Allergens KW - adverse effects KW - Double-Blind Method KW - Humans KW - Immunoglobulin E KW - blood KW - Immunoglobulin G KW - Poaceae KW - immunology KW - Pollen KW - Skin Tests N1 - Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ER -