1. FrieslandCampina Whitepaper Support qualitative sleep in adults (available on request)
2. Gibson GR, Hutkins R, Sanders ME, Prescott SL, Reimer RA, Salminen SJ, Scott K, Stanton C, Swanson KS, Cani PD, Verbeke K, Reid G. The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on the definition and scope of prebiotics. Nat Rev Gastroenterol Hepatol. 14(8);491-502 (2017).
* a prebiotic is a substrate that is selectively utilized by host micro-organisms conferring a health benefit (2).