Garrett (McLean Hospital, Belmont, Massachusetts, USA) Fitzmaurice & Michael G. Kenward 
Handbook of Missing Data Methodology 

Missing data affect nearly every discipline by complicating the statistical analysis of collected data. But since the 1990s, there have been important developments in the statistical methodology for handling missing data. Written by renowned statisticians in this area, Handbook of Missing Data Methodology presents many methodological advances and t