Table 1. Number of patients with Werner syndrome by attendance to different clinical department.

	Reported patients (n)	Researched clinical departments (n)	Reported patients / researched clinical departments (%)
Internal medicine	97	2804	3.5
Dermatology	91	1147	7.9
Plastic surgery	57	744	7.7
Orthopedics	40	1319	3.0
Ophthalmology	28	1165	2.4
Cardiac surgery	7	713	1.0
Total	320	7892	4.1

Reported patients includes 116 diagnosed patients who were attending the hospital for treatment during the survey, 51 patients suspected of having Werner syndrome, and 153 patients visited the hospital in the past 10 years although not having attended the hospitals during the survey. The numerator is "reported patients" and the denominator is "researched clinical departments". Patient overwraps could not be excluded completely. Two clinical departments answered in 32 facilities. Three clinical departments answered in 6 facilities.