Figure 1.

Flowchart of the validation process

Notes: ^aSelection in the DNPR: at least one primary diagnosis given at a department of neurology, neurophysiology, clinical genetics, or pediatrics during 1977–2012; ^brandom sample: 20 cases for every 5 years from 1977 to 2012.

Abbreviations: CMT, Charcot-Marie-Tooth disease; CDR, Central Denmark Region; DNPR, Danish National Patient Registry; N, number of cases.