From the perspective of the sponsors, the campaign will only generate a hundred of enrollees. What made this specific situation hard to solve is that not the sponsors or the service provider had clearly or clear, documented hopes of what the service provider must deliver.

Reference:
https://thecarecentral.wordpress.com/2020/01/28/do-the-awareness-campaigns-and-the-patient-recruitment-advertising-really-drive/
Related post:
https://www.careclinique.com/blog/why-does-patient-recruitment-have-to-be-so-hard