Victor M Montori, Roman Jaeschke, Holger J Schünemann, Mohit Bhandari, Jan L Brozek, P J Devereaux and Gordon H Guyatt .

Users' guide to detecting misleading claims in clinical research reports.

BMJ. 2004;329;1093-1096

Good article above. I think you can download it for free. I have it on pdf but it is too large to post.