Perceptions of healthcare workers on linkage between depression and hypertension in northern Ghana: a qualitative study oleh Dorothy Adu-Amankwah, Masih A. Babagoli, Raymond A. Aborigo, Allison P. Squires, Engelbert Nonterah, Khadija R. Jones, Evan Alvarez, Maria Anyorikeya, Carol R Horowitz, Benedict Weobong, David J. Heller