http://www.ats.ucla.edu/stat/stata/
http://www.bristol.ac.uk/cmm/learning/course-topics.html
http://www.princeton.edu/~otorres/Stata/
http://www.michaelnormanmitchell.com/stow/category/data-management
http://data.princeton.edu/stata/#s11
http://personalpages.manchester.ac.uk/staff/mark.lunt/stats_course.html
http://www.bristol.ac.uk/cmm/news-07-10.html
http://opr.princeton.edu/computing/software/stata/
http://www.cpc.unc.edu/research/tools/data_analysis/statatutorial/index.html
http://stata.5d6d.com/