The phenomenon has been borne out by several studies.
Third, the health care system has been ranked by several studies as one of the best in the world.
That belief was contradicted by several studies, including one from Congress's official economic scorekeeper, which Republicans dismissed as overly pessimistic.
These data are consistent with, and in fact predicted by, several studies in PCB-exposed animals.
Recently, the role of channelled erosion in sediment delivery has been underlined by several studies.
Therefore, as shown by several studies, shareholder activists increase the value of the firm –at least, in the short-term.
This has been confirmed by several studies.
However, this traditional view was recently challenged by several studies.
This paper adopts the framework used by several studies in the migration literature.
The association of cephalalgia with anxiety disorders has also been indicated by several studies [16].
Thus, the importance of early resuscitation has been remarked by several studies [15,27,28].
