Phone Calls to Retain Research Participants and Determinants of Reachability in an African Setting: Observational Study.

Melvin Draaijer Samanta Tresha Lalla-Edward Willem Daniel Francois Venter Alinda G Vos-Seda

Published in: JMIR formative research (2020)

ClinicalTrials.gov NCT02671383; https://clinicaltrials.gov/ct2/show/NCT02671383 and ClinicalTrials.gov NCT02670772; https://clinicaltrials.gov/ct2/show/NCT02670772.

Keyphrases

image quality
computed tomography
dual energy
contrast enhanced
magnetic resonance