Comment on

• A controlled trial of timed bright light and negative air ionization for treatment of winter depression.

  Terman M, Terman JS, Ross DC. Terman M, et al. Arch Gen Psychiatry. 1998 Oct;55(10):875-82. doi: 10.1001/archpsyc.55.10.875. Arch Gen Psychiatry. 1998. PMID: 9783557 Clinical Trial.
• Bright light treatment of winter depression: a placebo-controlled trial.

  Eastman CI, Young MA, Fogg LF, Liu L, Meaden PM. Eastman CI, et al. Arch Gen Psychiatry. 1998 Oct;55(10):883-9. doi: 10.1001/archpsyc.55.10.883. Arch Gen Psychiatry. 1998. PMID: 9783558 Clinical Trial.
• Morning vs evening light treatment of patients with winter depression.

  Lewy AJ, Bauer VK, Cutler NL, Sack RL, Ahmed S, Thomas KH, Blood ML, Jackson JM. Lewy AJ, et al. Arch Gen Psychiatry. 1998 Oct;55(10):890-6. doi: 10.1001/archpsyc.55.10.890. Arch Gen Psychiatry. 1998. PMID: 9783559 Clinical Trial.