Assessment of causality of individual adverse events following immunization (AEFI): a WHO tool for global use
Vaccine (2013) - Comments
pubmed: 24021304  doi: 10.1016/j.vaccine.2013.08.087  issn: 1873-2518  issn: 0264-410x 

Alberto E. Tozzi, Edwin J. Asturias, Madhava Ram Balakrishnan, Neal A. Halsey, Barbara Law, Patrick L.F. Zuber