@article{10.1371/journal.pmed.0030075, doi = {10.1371/journal.pmed.0030075}, author = {Young, Hugh}, journal = {PLOS Medicine}, publisher = {Public Library of Science}, title = {Two Groups Not on All Fours}, year = {2006}, month = {01}, volume = {3}, url = {https://doi.org/10.1371/journal.pmed.0030075}, pages = {null}, abstract = {null}, number = {1}, }