@misc{indiciaefeb86495ef53, title = {Meta-analyses involving cross-over trials: methodological issues.}, author = {Diana R Elbourne and Douglas G Altman and Julian P T Higgins and Francois Curtin and Helen V Worthington and Andy Vail}, year = {2002}, doi = {10.1093/ije/31.1.140}, url = {https://pubmed.ncbi.nlm.nih.gov/11914310/}, note = {Source identifier: 11914310} }