Incorrect *valueuom* in hosp.labevents for itemid 51249

[Bright381]

For itemid 51249, the valueuom is sometimes recorded as 'g/dL' and sometimes as '%', although it should seemingly be 'g/dL' consistently.

I don't know if this problem appears for some other itemids.

Edit: same issue with itemid 50889 and valueuom sometimes NA sometimes mg/L.