A

Aunger, R (2016). Hygiene Council Global Survey on Personal and Household Hygiene, 2011. [Data Collection]. UK Data Service, Colchester, Essex, United Kingdom. http://doi.org/10.5255/UKDA-SN-8031-1

S

Strachan, D, Pearce, N and Garcia-Marcos, L (2017). International Study of Asthma and Allergies in Childhood, 1992-2005. [Data Collection]. UK Data Service. http://doi.org/10.5255/UKDA-SN-8131-1