Patient satisfaction with health care at a tertiary hospital in Northern Malawi: results from a triangulated cross-sectional study oleh Frank Watson Sinyiza, Paul Uchizi Kaseka, Master Rodgers Okapi Chisale, Chikondi Sharon Chimbatata, Balwani Chingatichifwe Mbakaya, Pocha Samuel Kamudumuli, Tsung-Shu Joseph Wu, Alfred Bornwell Kayira