Patients' and partners' experience of anxiety in the Netherlands (NL) and Germany (GE), based on the Generalised Anxiety Disorder-single item questionnaire [13]. Patients' and partners' experience of anxiety in the Netherlands (NL) and Germany (GE), based on the Generalised Anxiety Disorder-single item questionnaire [13]. Subject responses to the question “How often in the past 2 weeks did you have problems relaxing?” Mirjam J.G. van Manen et al. ERJ Open Res 2017;3:00065-2016 ©2017 by European Respiratory Society