Cancer is a broad term used to describe a group of diseases characterized by the uncontrolled growth and spread of abnormal cells in the body.

Disability is defined as any physical, cognitive, sensory, or mental impairment that affects a person's ability to perform tasks or participate fully in society.

The Global Burden of Disease Study (GBD) is a comprehensive regional and global research program of disease burden that assesses mortality and disability from major diseases, injuries, and risk factors.

Harvard University is a renowned private research university located in Cambridge, Massachusetts, United States.

The Human Development Index (HDI) is a composite statistical measure used to rank countries based on their level of human development and well-being.

The Institute for Health Metrics and Evaluation (IHME) is a national and international public health agency and research institute working in the area of global health statistics and impact evaluation, located at the University of Washington in Seattle.

The Wikipedia page "List of countries by life expectancy" provides a comprehensive ranking of countries around the world based on their average life expectancy.

The management of HIV/AIDS normally includes the use of multiple antiretroviral drugs as a strategy to control HIV infection.