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The impact of tryptophan supplementation on sleep quality: a systematic review, meta-analysis, and meta-regression
Polyak SJ, Paschal DM, McArdle S, Gale, Jr MJ, Moradpour D & Gretch DR (1999) Characterization of the effects of hepatitis C virus nonstructural 5A protein expression in human cell lines and on interferon-sensitive virus replication
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A vanity effect in how respondents present themselves may explain why Gallups obesity estimates are typically somewhat lower than those obtained from studies that use randomized clinical measurements of height and weight
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