Complex sentence: Indirect causes are things such as malaria, anaemia, The commonest causes of anaemia are poor nutrition, iron, and other micronutrient deficiencies, which are in addition to malaria, hookworm, and schistosomiasis (2005 WHO report p45).
Split into simpler sentences: Indirect causes are things such as malaria, anaemia, The commonest causes of anaemia are poor nutrition, iron and other micronutrient deficiencies. These things in addition to malaria, hookworm and schistosomiasis (2005 WHO report p45).