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Two researchers conducted each interview, reviewed the recordings, and agreed that data saturation (assessed as no new idea elements) had occurred following fifteen interviews

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Murrow Biography Author: Biography.com Editors Website Name: The Biography.com website Url: Access Date: Publisher: A&E

A pre-specified criterion was established to terminate the trial if the sample size re-estimation indicated that more than 250 participants would need to be randomised in order to detect the expected effect