Table 1.

Demographic data for 18 patients.

	Patients
	(n)	(%)
Hypertension	2	11.1
Gastro-oesophageal reflux disease	1	5.6
Tobacco use	3	16.7
Narcotic use	3	16.7
Psychiatric history	4	22.2
Nutcracker syndrome	13	72.2