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502,505 items of data are available, covering 502,505 participants, encoded using Data-Coding 8
Calendar month of birth of participant.
Acquired from central registry, updated by participant.
2 Related Data-Fields
|33||Date of birth||Current Field is the month part of Field 33|
|34||Year of birth||Current Field is the calendar month within the year Field 34|
There are no tabulations involving field 52.
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