Definition Canker sores (aphthous ulcers) are small shallow sores or ulcers that appear inside the lips, inside the cheeks, or on the gums. They begin as small, reddish swellings. Then they burst, and the rupture sores are covered with a white or yellow membrane. The edges of the sores ...
As the definition of a migrant differed between countries, patterns of relative differences within countries were compared, rather than absolute value comparisons (Additional file 2). For Kenya, the IPUMS data was supplemented with household survey data (KIHBS) to compare short-term travel and bed...
As the literature review above shows, for many factors, findings are somewhat ambiguous and depend on inclusion of control variables and definition of electricity consumption. Hence, comparison across studies is difficult, in particular, because there is no study that looked at a large number of po...