Fig. 2

a Age at diagnosis of the entire group of MPS I patients. b Time between the first visit to a medical specialist for an MPS I-related symptom and final diagnosis in the entire group of MPS I patients. c Age at diagnosis of the group of MPS I Hurler patients. d Time between the first visit to a medical specialist for an MPS I-related symptom and final diagnosis in the group of MPS I Hurler patients. In all figures, time is presented in months. Both MPS I and MPS I Hurler patients were divided into groups based on the year of diagnosis