After all, as a general rule auditors are changed only when either the client or the audit firm is unhappy about the relationship, and a dispute over accounting or even suspicion of management may be at the heart of such a split.
The Glasgow coma score was obtained before starting sedation and was changed only when the sedation effects had finished.
As the former White House curator Rex Scouten once told me, in the era from Taft to Truman, the green rug in the president's office was changed only once, when it wore out, to a new green rug.
After the demise of President Bill Clinton's plan for universal coverage, Mr. Waxman said, he concluded that "the health care system can be fundamentally changed only when there's strong public support for a specific proposal".
The tunneling current is dramatically changed only when the laser is focused on the nano contact area, as shown in Supplementary Figure S5.
Galleries that once changed only when works were loaned out are now subject to frequent renewal.
This changed only when Nelson Mandela was released from prison in February 1990.
But while it's worth revisiting your strategic principle every time you reexamine your strategy, it is likely to change only when there is a significant shift in the basic economics and opportunities of your market caused by, say, legislation or a completely new technology or business model.
If past disasters have taught us anything, it is that things change only when powerful people are put in the dock.
