Study: NCT01440452

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Lumbar puncture
Description: The study includes 2 lumbar punctures: one at the beginning of the study and one at the end. During a lumbar puncture a small needle will be inserted into the lower back and a small amount of spinal fluid will be drained (about 1 tablespoon).

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Lumbar puncture
Description: The study includes 2 lumbar punctures: one at the beginning of the study and one at the end. During a lumbar puncture a small needle will be inserted into the lower back and a small amount of spinal fluid will be drained (about 1 tablespoon).

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Mood assessment
Description: If you do not already have an account, you will be signed up with Mood24/7 (http://www.mood247.com). This is a free service that texts your mobile phone daily asking you to rate your mood on a scale of 1 (low) through 10 (high). We will not monitor your entries during the study but only at the final visit when we will get a printout of the course of your mood during the study. After completion of the study we will assist you in removing us from your Mood24/7 account and we will no longer have access to your mood reports outside of the study period.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Mood assessment
Description: If you do not already have an account, you will be signed up with Mood24/7 (http://www.mood247.com). This is a free service that texts your mobile phone daily asking you to rate your mood on a scale of 1 (low) through 10 (high). We will not monitor your entries during the study but only at the final visit when we will get a printout of the course of your mood during the study. After completion of the study we will assist you in removing us from your Mood24/7 account and we will no longer have access to your mood reports outside of the study period.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Mood assessment
Description: If you do not already have an account, you will be signed up with Mood24/7 (http://www.mood247.com). This is a free service that texts your mobile phone daily asking you to rate your mood on a scale of 1 (low) through 10 (high). We will not monitor your entries during the study but only at the final visit when we will get a printout of the course of your mood during the study. After completion of the study we will assist you in removing us from your Mood24/7 account and we will no longer have access to your mood reports outside of the study period.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Mood assessment
Description: If you do not already have an account, you will be signed up with Mood24/7 (http://www.mood247.com). This is a free service that texts your mobile phone daily asking you to rate your mood on a scale of 1 (low) through 10 (high). We will not monitor your entries during the study but only at the final visit when we will get a printout of the course of your mood during the study. After completion of the study we will assist you in removing us from your Mood24/7 account and we will no longer have access to your mood reports outside of the study period.