Welcome to the InterRett study registration and family questionnaire page!


To register please click on the following link.

Register to participate in InterRett - English

Register to participate in InterRett - Portuguese


To complete one of our family questionnaires you can go directly to the login using the link below.

English Family questionnaire

Dutch Family questionnaire

French Family questionnaire

German Family questionnaire

Mandarin Family questionnaire

Polish Family questionnaire

Spanish Family questionnaire

Hungarian Family questionnaire

Portuguese Family questionnaire


To visit the InterRett website please click here.