  GGMs were estimated using a Bayesian framework and for each individual diagnosis, graph-theoretical statistics were calculated to determine structural changes associated with disease severity.
<fluency>   GGMs were estimated using a Bayesian framework and for each individual diagnosis, graph-theoretical statistics were calculated to determine structural changes associated with disease severity.
 Separate GGMs were estimated using a Bayesian framework and for each individual diagnosis, graph-theoretical statistics were calculated to determine structural changes associated with disease severity.