@article{doi:10.1001/archinternmed.2011.1499, author = {Magee CD and Byars L and DeZee KJ}, title = {LImitations of subgroup analyses in meta-analysis of cardiac resynchronization therapy by qrs duration}, journal = {Archives of Internal Medicine}, volume = {172}, number = {4}, pages = {375-376}, year = {2012}, doi = {10.1001/archinternmed.2011.1499}, URL = { + http://dx.doi.org/10.1001/archinternmed.2011.1499}, eprint = {/data/Journals/INTEMED/22609/ilt120001_375a_376.pdf} }