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 Moving average crossover In the statistics of time series, and in particular the analysis of financial time series for stock trading purposes, a moving-average crossover occurs when, on plotting two moving averages each based on different degrees of smoothing, the traces of these moving averages cross. It does not predict future direction but shows trends. This indicator uses two (or more) moving averages, a slower moving average and a faster moving average. The faster moving average is a short term moving average. For end-of-day stock markets, for example, it may be 5-, 10- or 25-day period while the slower moving