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Context: Gelwir ar Lywodraeth Cymru i annog ymddiriedolaethau i roi canllawiau'r Sefydliad Cenedlaethol dros Ragoriaeth mewn Iechyd a Gofal ar waith ar gyfer Anhwylder Personoliaeth Ffiniol, neu gyfiawnhau pam nad ydynt yn gwneud hynny.
