Cooking-related burn injuries at Muhimbili National hospital and knowledge about safe use of liquefied petroleum gas in Dar Es Salaam, Tanzania: A cross-sectional study oleh Anord Nyanana, Laurean Rwanyuma, Faraja Chiwanga, Jessie Mbwambo, Charles Pallangyo, Usule Tarimo, Sydney A. Spangler, Lisa M. Thompson