@misc{indiciaefd4bf530f58b, title = {Modelling ordinal responses from co-twin control studies.}, author = {F B Hu and J Goldberg and D Hedeker and W G Henderson}, year = {1998}, doi = {10.1002/(sici)1097-0258(19980515)17:9<957::aid-sim791>3.0.co;2-o}, url = {https://pubmed.ncbi.nlm.nih.gov/9612884/}, note = {Source identifier: 9612884} }