Guest speaker: Title: Ayurveda and Sri Lankan traditional medicine approaches in joint disorders (Sandhigata Roga) and clinical trials. Expert conference for Ayurveda doctors, therapists and health professionals, 20th International Ayurveda Symposium , September 14 – 16, 2018 in Birstein, Germany(http://www.ayurveda-symposium.org/index.php/en/)