1. American Academy of Pediatrics 2015 Red book online: Immunization in preterm and low birth weight infants http://redbook.solutions.aap.org/chapter.aspx?sectionId=88187007&bookId=1484&resultClick=1
2. Australian Government 2016 The Australian immunisation handbook; Groups with special vaccination requirements http://www.immunise.health.gov.au/internet/immunise/publishing.nsf/Content/Handbook10-home~handbook10part3~handbook10-3-3#3-3-2
3. Evaluation of vaccine coverage for low birth weight infants during the first year of life in a large managed care population;Batra;Pediatrics,2009
4. National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: A systematic analysis and implications;Blencowe;The Lancet,2012
5. Immunisation of premature infants;Bonhoeffer;Archives of Disease in Childhood,2006