Men who have sex with men blood donor controversy not be accepted at any point in the future, thus constituting a de facto ban. Restrictions vary from country to country and in some countries practice of protected sex or periods of abstinence are not considered. The restrictions affect these men and, in some cases, any female sex partners. They do not otherwise affect other women, including women who have sex with women. The United States Food & Drug Administration (FDA) asserts that the one year deferral window is "supported by the best available scientific evidence". Many LGBT organizations view the restrictions on donation as based on homophobia and not
Moving average crossover average is medium or long term moving average (e.g. 50-, 100- or 200-day period). A short term moving average is faster because it only considers prices over short period of time and is thus more reactive to daily price changes. On the other hand, a long term moving average is deemed slower as it encapsulates prices over a longer period and is more lethargic. However, it tends to smooth out price noises which are often reflected in short term moving averages. A moving average, as a line by itself, is often overlaid in price charts to indicate price trends. A