Sampling
The quantitative methods considered the perspectives of isPO patients and isPO OGs.All isPO patients who met the aforementioned inclusion criteria and gave consent to participate in the isPO study were considered for the evaluation. The network coordinators sent the contact information of all patients to the isPO Trust Centre on a monthly basis, as patients were enrolled into the isPO programme ongoing from 1/2019 to 3/2021.Concerning the isPO OGs, all persons who obtained the training and had been certified were invited to the survey, regardless of whether they had already conducted conversations with patients (