Reply to Kripke

References 

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2. Walsh JK, Roth T, Randazzo AC, Erman M, Jamieson A, Scharf M, et al. Eight weeks of non-nightly use of zolpidem for primary insomnia. Sleep. 2000;23:1087–1096
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3. Walsh JK, Roth T, Jamieson A. Intermittent use of zolpidem for the treatment of primary insomnia. Sleep. 2000;23:
4. Alpert JS, Furman S, Smaha L. Conflicts of Interest. Arch Intern Med. 2002;162:635–637
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5. Kripke DF. Why we need a tax on sleeping pills. Southern Med J. 1983;76:632–636