Established protocol for aircraft accident investigation did not exist.

The president's press office said that she was in good health and would follow established protocols.

Established protocols are employed to regulate the progress of information flow between stations.

Each step of the custody chain needs to follow established protocols and to maintain proper records.

The recommendations emphasize evaluating new procedures prospectively, entering patients and studies into registries and databases to capture all incidences of a procedure, and reporting outcomes by established protocols.