गोदान एलार्जिनि जौगाखांनायखौ खमाय होनायाव एमुनथेरापिनि गोलाव - सम खामानिगोनां आरो सोखाथायारि फिथाइखौ बिजिरसंनाया दिन्थिदों ।
Studies have demonstrated the long term efficacy and the preventive effect of immunotherapy in reducing the development of new allergy .