ICLIT group
Injections were performed under color Doppler ultrasound guidance using a 7-gauge needle, three times on the same side. Under strict aseptic procedures, 0.1ml (50TU) of 500TU/mL (concentration grade 2) of alum-adsorbed allergen extracts was injected into the superficial II or III area cervical lymph nodes (approximately 0.5-0.8 cm in size), after 28 days (4 weeks) and 56 days (8 weeks), the second and third injections were the same. Treatment interval was 4 weeks for a total period of 2 months(