@misc{indiciae3823f111b7a6, title = {Group sequential clinical trials for longitudinal data with analyses using summary statistics.}, author = {John M Kittelson and Katrina Sharples and Scott S Emerson}, year = {2005}, doi = {10.1002/sim.2127}, url = {https://pubmed.ncbi.nlm.nih.gov/15977295/}, note = {Source identifier: 15977295} }