possible typo

https://www.google.co.uk/search?lr=lang_fr&as_qdr=all&tbs=lr...

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Note added at 8 mins (2019-12-17 14:05:45 GMT)
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oh, look:
https://medicalforum.ch › article › doi › fms.2019.08085
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by MA Bornet - ‎2019 - ‎Cited by 1 - ‎Related articles
5 Jun 2019 - La facturation de l'analyse est de 21 CHF, contre 2.50 CHF pour la créatinine. ... Le stade de la maladie rénale chronique se trouve ainsi modifié, d'un stade G2,A1 ***à un stade G3a,A1*** selon KDIGO («Kidney Disease: ...

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Note added at 9 mins (2019-12-17 14:06:49 GMT)
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KDIGO 2017 Clinical Practice Guideline Update for the ...
https://kdigo.org › wp-content › uploads › 2017/02 › 2017-KDIGO-CKD-...
31 May 2017 - renal osteodystrophy among patients with CKD G3a–G5 .... GFR category (G1–G5), and ***albuminuria category (A1–A3)***, abbreviated as CGA.