A computer-implemented method is provided for anatomically indexing a subject. Examples of such antagonists include ActRIIB polypeptides, anti-ActRIIB antibodies, anti-myostatin antibodies, anti-GDF3 antibodies, anti-Nodal, anti-activin, and anti-GDF11 antibodies. To form this superframe, a plurality of tagged data packets can be aggregated into a packed aggregation block.