Graphic Cigarette Warning Labels (image) RAND Corporation Share Print E-Mail Caption Examples of the types of graphic warning labels used in the RAND study. These labels are required in more than 100 nations and use of them in the US has been blocked by legal action. Credit RAND Corp. Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.