Start Relative to Reference Time Point

An indication or description that the start of the observation is before, during or after a reference time interval.

A coded value specifying when this event started with respect to the sponsor-defined reference period.

Indicates the beginning action of a procedure.

The date and time of the beginning of a dosing interval.

An autosomal recessive and rarely autosomal dominant inherited disorder caused by mutations in the ABCA4 or ELOVL4 genes respectively. It is characterized…

The determination of the amount of starch crystals present in a sample.