Robbins KT et al. Neck dissection classification update: revisions proposed by the American Head and Neck Society and the American Academy of Otolaryngology-Head and Neck Surgery. Arch Otolaryngol Head Neck Surg 2002;128:751-8
Lindberg R. Distribution of cervical lymph node metastases from squamous cell carcinoma of the upper respiratory and digestive tracts. Cancer 1972;29:1446.
Byers RM, Weber RS, Andrews T, et al. Frequency and therapeutic implications of ‘‘skip metastases’’in the neck from squamous carcinoma of the oral tongue. Head Neck 1997;19:14-9.