Protocol for a mixed-methods study to explore implementation outcomes of the Phone-based Interventions under Nurse Guidance after Stroke (PINGS-II) across 10 hospitals in Ghana oleh John Amuasi, Bruce Ovbiagele, Melvin Katey Agbogbatey, Fred Sarfo, Alexis Beyuo, Patrick Agasiya, Austin Adobasom-Anane, Sylvester Newton