Domdey A, Njue A, Nuabor W, Lyall M, Heyes A, Elliott L. Allergy immunotherapies for allergic rhinitis: systematic review and assessment of evolving quality. Eur Ann Allergy Clin Immunol. 2019 Jul;51(4):147-58. doi: 10.23822/EurAnnACI.1764-1489.100
Mangel AW, Fehnel SE. End points in irritable bowel syndrome. Expert Rev Gastroenterol Hepatol. 2011 Jun 1;5(3):293-5.