https://sites.bu.edu/childcardresearch/research-programs/increasing-access-decreasing-anxiety-a-pilot-randomized-trial-of-a-one-week-telehealth-delivered-treatment-program-for-adolescents/
Increasing Access, Decreasing Anxiety: A Pilot Randomized Trial of a One-Week Telehealth-Delivered...
trial of one
https://research.birmingham.ac.uk/en/projects/multicentre-randomized-trial-of-one-onlyflexiblesigmoidoscopy-scr/
Multicentre Randomized Trial Of 'One Only'FlexibleSigmoidoscopy Screening For Prevention Of Bowel...
trial of onerandomized