2[1]Powell N B,Riley R W,Troell R J,et al. Radiofrequency volumetric tissue reduction of the palate in subjects with sleep-disordered breathein. Chest, 1998,133:1163-1174.
3[2]Li K K, Powell N B, Riley R W,et al . Radiofrequency volumetric tissue reduction for treatment of turbinate hypertrophy: A pilot study.Otolaryngol Head Neck Surg, 1998,119: 569-573.
4[3]Powell N B, Riley R W, Guilleminault C. Radiofrequency tongue base reduction in sleep-disordered breathing: A pilot study. Otolaryngol Head Neck Surg, 1999,120:656-664.