IBS - Irritable Bowel Syndrome

• A.O. Bolognini — Seriate, BG, Italy
• A.O. "G. Brotzu"- Ospedale San Michele — Cagliari, CA, Italy
• AOU di Cagliari - Policlinico di Monserrato — Cagliari, CA, Italy
• Ospedale Valduce — Como, CO, Italy

• Wageningen University & Research — Wageningen, Gelderland, Netherlands

• Viome Research Institute — Bothell, Washington, United States

• Citruslabs — Santa Monica, California, United States

• Kliniken Essen-Mitte — Essen, Am Deimelsberg 34 A, Germany
• Charité Hochschulambulanz für Naturheilkunde am Immanuel Krankenhaus — Berlin, Germany

• Stacy Hunter — San Marcos, Texas, United States

• Centre for psychatry research — Stockholm, Stockholm County, Sweden

• Fondazione Policlinico Gemelli — Roma, RM, Italy

• The Second Affiliated Hospital of Xi'an Jiaotong University — Xi'an, Shaanxi, China

Not specified