The United Nations Children's Fund (UNICEF) and the World Health Organization designated Kerala the world's first "baby-friendly state" because of its effective promotion of breast-feeding over formulas. Over 95% of Keralite births are hospital delivered and the state also has the lowest Infant mortality rate in the country. The third National Family Health Survey ranks Kerala first in "Institutional Delivery" with 100% births in medical facilities. Ayurveda, "siddha", and endangered and endemic modes of traditional medicine, including "kalari", "marmachikitsa" and "vishavaidyam", are practised. Some occupational communities such as Kaniyar were known as native medicine men in relation to the practice of such streams of medical systems, apart from their traditional vocation. These propagate via "gurukula" discipleship, and comprise a fusion of both medicinal and alternative treatments.