Aetiology: The study of the causes. For example, of a disorder. The word aetiology is mainly used in medicine, where it is the science that deals with the causes or origin of disease, the factors which produce or predispose toward a certain disease or disorder.Today in medicine one hears (or reads) that the aetiology is unknown..or example, of a disorder. The word aetiology is mainly used in medicine, where it is the science that deals with the causes or origin of disease, the factors which produce or predispose toward a certain disease or disorder. Today in medicine one hears (or reads) that the aetiology is unknown..
Saba Saba Day is a Tanzanian public holiday celebrated on July 7. It is marked with the Dar es Salaam International Trade Fair Saba Saba Day is a Tanzanian public holiday celebrated on July 7.
Christmas Day is a public holiday in Ethiopia and Eritrea that is celebrated on January 7 or on 27 Tahsas of the Ethiopian calendar. Christmas is called Ledet (áá°áµ) in Eritrea or Gena (áá) in Ethiopia. Many people who are Christian in the two countries fast for 40 days (it is called fast of the prophets).