[1] Aarhus Univ, Natl Ctr Register Based Res, Aarhus, Denmark
[2] Univ Penn, Dept Neurol, Philadelfia, PA USA
[3] Univ Melbourne, Austin Hlth, Epilepsy Res Ctr, Med, Heidelberg, Vic, Australia
[4] Yale, Dept Neurol, New Haven, CT USA
[5] Columbia Univ, Dept Epidemiol, New York, NY USA
[6] Columbia Univ, Dept Neurol, New York, NY USA
[7] Columbia Univ, GH Sergievsky Ctr, New York, NY USA
[8] Aarhus Univ Hosp, Dept Neurol, Inst Clin Med, Aarhus C, Denmark