Thematic block one: Best basis for patient treatment. blue: agree; red: disagree; grey: undecided; Block 1: "The physician can best treat the patient... 1.1 ..on the basis of scientific knowledge in form of guidelines." 1.2 ..in the balance of scientific recommendations, individual needs and current possibilities." 1.3 ..without guidelines and with the knowledge of individual needs and patient's possibilities." 1.4 ..on the basis of continuous communication with colleagues."