For arranging appointments please call 0251 83 - 58350 to get into contact with the NAKO-secretariat. We are looking forward to answering your questions concerning either the study in general or your personal participation.We are available Monday to Friday from 8 a.m. to 4 p.m.. Outside these office hours it is possible to leave a message. By e-mail nako@uni-muenster.de the study team is reachable around the clock.