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1 题目：Determining transition probabilities: confusion and suggestions

作者：DK Miller, SM Homan - Medical Decision Making
来源：Medical Decision Making, Vol. 14, No. 1, 52-58 (1994)
http://mdm.sagepub.com/cgi/content/abstract/14/1/52
2题目： A Maximum Likelihood Estimator of a Markov Model for Disease Activity
作者：S. Borg, U. Persson, T. Jess, O. O. Thomsen, T. Ljung, L. Riis, and P. Munkholm
来源：Medical Decision Making.2010; 30: 132-142
http://mdm.sagepub.com/cgi/reprint/30/1/132
3题目：Multi-state models for event history analysis.
作者：Andersen PK, Keiding N.
来源：Statistical Methods in Medical Research2002 Apr;11(2):91-115.
http://www.ncbi.nlm.nih.gov/pubmed/12040698