The Resilience of Attitude Toward Vaccination: Web-Based Randomized Controlled Trial on the Processing of Misinformation - Benoît Béchard; Julie A Gramaccia; Dominique Gagnon; Elhadji Anassour Laouan-Sidi; Ève Dubé; Mathieu Ouimet; Delphine de Hemptinne; Sébastien Tremblay (JMIR Formative Research)