The phrase "add additional time" is correct and usable in written English.
You would use it when you want to refer to an extension of time or an increase in time. For example, "Because the project is so complex, we need to add additional time to complete it."
These advanced cardiac measurements take training to competently perform, and could add additional time to the patient's evaluation with FOCUS, but can be performed in an efficient manner once learned, in the appropriate clinical setting.
While simple, this data collection aspect can add additional time and work for these individuals, thus having their buy-in is important.
In some ways, the second option would have provided a more "real world" comparison, in that the use of yoga with CBT does add additional time and treatment burden to quitting smoking.
The at-large members were particularly helpful explaining to the Steering Committee the specific burdens created for doctors when they had to add additional time to their patient care encounters (for example, for conducting informed consent discussions) or increase their overall paperwork burden.
Add additional time -- a half-hour or an hour -- to when they really need to be there to account for any latecomers.
This earned me another ticket for "refusing medical attention", adding additional time to my solitary sentence.
Participants reported that having medical learners added additional time pressures.
A retrospective questionnaire of mammographers' perceptions demonstrated the technique was easy and rarely added additional time.
After a failed result, NIPT can be repeated, or alternative testing can be considered, but this adds additional time to the screening and diagnostic process that may put pressure on further choices and may impact on whether the woman could still have a non-surgical termination.
Besides the effect on intracorporal anatomical structures, those artifacts also generate extracorporeal artifact-structures, disturbing the fabrication of the 3D-model, adding additional time-consuming segmentation steps to eliminate those structures.
A proposal to add additional crew time by extending the length of shuttle and Soyuz visits to the station looks mostly like a stopgap measure.
