STW 5 in 1515 patients with functional gastrointestinal diseases - Möller, J; Raskopf, E; Greinert, O; Zadoyan, G; Schleicher, S; Shah-Hosseini, K; Wegener, T; Kelber, O; Singh, J; Kraft, K; Nieber, K; Mösges, R (Planta Medica, 2019)