Van Someren Eus J W, Riemersma Rixt F, Swaab Dick F
Graduate School Neuroscience Amsterdam, Netherlands Institute for Brain Research, Meibergdreef 33, 1105 AZ Amsterdam, The Netherlands.
Prog Brain Res. 2002;138:205-31. doi: 10.1016/S0079-6123(02)38080-4.