Journal article (2006) - HE Hulshoff Pol (author), HG Schnack (author), U Bürgel (author), K Zilles (author), E de Geus (author), DL Boomsma (author), RS Kahn (author), D. Posthuma (author), RCW Mandl (author), WF Baaré (author), C.J. van Oel (author), NE van Haren (author), DL Collins (author), AC Evans (author), K Amunts (author)