Research has shown that the quality of health care does indeed vary among different socioeconomic groups. Children in families of low socioeconomic status are the most susceptible to health inequities. "Equity, Social Determinants and Public Health Programmes" (2010) is a book edited by Blas and Sivasankara that includes a chapter discussing health equities among children. Gathering information from 100 international surveys, this chapter states that children in poor families under 5 years of age are likely to face health disparities because the quality of their health depends on others providing for them; young children are not capable of maintaining good health on their own. In addition, these children have higher mortality rates than those in richer families due to malnutrition. Because of their low socioeconomic status, receiving health care can be challenging. Children in poor families are less likely to receive health care in general, and if they do have access to care, it is likely that the quality of that care is not highly sufficient.