BMC Pregnancy and Childbirth, Volume 7, Year 2007
Pediatric Allergy and Immunology, Volume 28, No. 4, Year 2017
The Lancet, Volume 377, No. 9759, Year 2011
Transactions of the Royal Society of Tropical Medicine and Hygiene, Volume 102, No. 4, Year 2008
Pediatric Allergy and Immunology, Volume 28, No. 8, Year 2017