By Version

• R2: 117
• R2B: 0
• R3: 21,796
• R4: 159,708
• R4B: 43,721
• R5: 32,853
• R6: 2,468

By Authority

• none: 191,623
• hl7: 74,292
• ihe: 1,324
• national: 4,286
• who: 1,345

By Realm

• none: 185,296
• au: 757
• be: 606
• br: 400
• ca: 1,468
• ch: 1,783
• cl: 553
• cr: 117
• cz: 974
• de: 2,324
• dk: 1,540
• ee: 250
• eu: 977
• fi: 87
• fr: 3,309
• il: 328
• in: 163
• it: 116
• jp: 174
• kr: 30
• nl: 2,249
• no: 125
• nz: 240
• pl: 258
• pt: 50
• se: 161
• stt: 116
• tw: 1,821
• uk: 6
• us: 22,368
• uv: 44,080
• vn: 108
• other: 6