Retropharyngeal Abscess
Emedicine.medscape.com Jan, Kahn, J.H. & Shlamovitz, G.Z., 2017
Neck-Cracker Neuropathy
NEJM 318:1072, Nelson,K.R.&Tibbs,P., 1988
Accessory Nerve Palsy
JNNP 40:1113, Olarte,M.,et al, 1977
Radiation-Induced Cranial Nerve Palsy
Cancer 40:152-155, Berger,P.S.,et al, 1977