Methods and applications of longitudinal data analysis / [electronic resource] Xian Liu. Liu, Xian, author. Longitudinal method. Multivariate analysis. QA278 519.5/35 23 Includes bibliographical references and index. Title details screen (ScienceDirect, viewed September 9, 2015). 2015 Text 1 online resource. http://www.sciencedirect.com/science/book/9780128013427 eng