Gomersall T, Spencer S, Basarir H, Tsuchiya A, Clegg J, Sutton A, Dickinson K. Measuring quality of life in children with speech and language difficulties: a systematic review of existing approaches. Int J Lang Commun Disord. 2015 Jul;50(4):416-35. doi: 10.1111/1460-6984.12147
Lincourt W, Stanford RH, Gilsenan A, DiBenedetti D, Ortega H. Assessing primary care physician`s beliefs and attitudes of asthma exacerbation treatment and follow-up. Open Respir Med J. 2010 Feb 22;4:9-14.