“…To facilitate the discussion and development of an evidence- and consensus-based definition, A dedicated ERNST working group was launched (WG2). The working group was led by two researchers (KV and MP) with experience of the topic [ 4 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ].…”