\begin{thebibliography}{1}

\bibitem{holland-rosenbaum}
P.~W. Holland and P.~R. Rosenbaum.
\newblock Conditional association and unidimensionality in monotone latent
  variable models.
\newblock {\em The Annals of Statistics}, pages 1523--1543, 1986.

\bibitem{lecci2014}
F.~Lecci.
\newblock An analysis of development of dementia through the extended
  trajectory grade of membership model.
\newblock In E.~M. Airoldi, D.~Blei, E.A. Erosheva, and S.~E. Fienberg,
  editors, {\em Handbook of Mixed Membership Models}. Chapman \& Hall/CRC,
  2014.

\bibitem{manrique-vallier-fienberg2010b}
D.~Manrique-Vallier.
\newblock {\em Longitudinal Mixed Membership Models With Applications}.
\newblock PhD thesis, Carnegie Mellon University Department of Statistics,
  Pittsburgh, PA, 2010.

\bibitem{molsberry-etalReview}
S.A. Molsberry, F.~Lecci, L.~Kingsley, B.~Junker, S.~Reynolds, K.~Goodkin,
  A.~Levine, E.~Martin, Miller E., C.~Munro, Ragin A., Sacktor N., and
  J.~Becker.
\newblock Mixed membership trajectory models of cognitive impairment in the
  multicenter {AIDS} cohort study.
\newblock {\em AIDS}, 6:713--721, 2015.

\end{thebibliography}
