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Table 1 Number of sites and patients enrolled in the HPP Registry by age at enrollment

From: Diagnostic delay is common among patients with hypophosphatasia: initial findings from a longitudinal, prospective, global registry

  Patients Enrolled,a n
Country No. of Sites Children (age < 18 y) Adults (age ≥ 18 y) Total
United States 16 38 76 114
United Kingdom 6 24 13 37
Japan 23 28 2 30
Spain 7 5 18 23
Canada 1 8 13 21
France 2 6 9 15
Australia 2 10 1 11
Russia 1 1 0 1
Italy 3 0 10 10
Germany 3 1 5 6
Portugal 1 0 1 1
Total 65 121 148 269
  1. HPP hypophosphatasia
  2. aEnrollment dates: January 2015–September 2017