Those patients were divided into @ groups randomly : @ cases in intradermal injection group were administered via bilateral forearm intradermal injections for immunotherapy once @ days , then the blocking antibody was determined after @ ( @ cases ) , @ ( @ cases ) , @ ( @ cases ) , @ ( @ cases ) times respectively , while in subcutaneous injection group , the @ cases were administered via subcutaneous injection once @ days , the blocking antibody measured after @ times ; In both cases , the blocking antibody was all determined @ weeks later .