| Drs. Hartman, Gelhorn, Crowley, Sakai, and Hopfer are with the School of Medicine at the University of Colorado Health Sciences Center; Drs. Stallings, Young, Rhee, Corley, and Hewitt are with the Institute for Behavioral Genetics at the University of Colorado. |
| Institute for Behavioral Genetics, University of Colorado. |
| Institute for Behavioral Genetics, University of Colorado, 447 UCB, Boulder, CO 80303, USA. Susan.Young@Colorado.edu |
| Institute for Behavioral Genetics, University of Colorado at Boulder, Boulder, CO 80309, USA. susan.young@colorado.edu |