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)