Unlike earlier studies, Murray's team found that neither smoking nor coffee drinking had any effect on H. pylori infection.

Unlike previous studies, the researchers chose a place and time when there was already an active aurora.

Unlike past studies, the Women's Health Initiative does not focus on a specific disease like cancer.

Unlike previous studies, it was found to be more closely related to Tseajaiidae than Limnoscelidae.

Unlike previous studies used to establish recommended amounts, this one looked beyond the levels needed to prevent scurvy.

Unlike most other studies, their work does not examine inequality among individuals, but rather differences in average income across counties.

Unlike previous studies on the subject, she used the above-mentioned two-dimensional model for sexual orientation.

Unlike previous studies, Chamberlain did not pool the observations for the separate contracts on each commodity.

Unlike other studies on the subject, however, they looked at data from the same people at two points in time.

"Unlike other studies, it doesn't dance around the issues."