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Males are usually born in excess of females. The sex ratio at birth (SR) is often expressed as the ratio of male to total births. A wide variety of factors have been shown to influence SR, including terrorist attacks, which have been shown to reduce SR. This paper reviews the effects on SR outcomes of the stressful events in France in 1968 (in association with the student and worker riots) and in Japan following the Aum Shinrikyo religious cult’s attack on the Tokyo subway using sarin nerve gas in 1995. Both countries displayed seasonal variation in SR. France exhibited a decline in SR in 1968 (p=0.042), with a particularly strong dip in May of that year (p=0.015). For Japan, there was no statistically significant dip for 1995 but there was a significant dip in June of that year (p=0.026). The SR dips follow catastrophic or tragic events if these are perceived to be momentous enough by a given populace. It is believed that SR slumps may be caused by population stress, which is known to lead to the culling of frail/small male fetuses. It has been observed that these fluctuations are comparable in intensity to a substantial proportion of quoted values for perinatal mortality, potentially making this a public health issue. [ABSTRACT FROM PUBLISHER]

This article compares the means that the United States, France, and Japan use to oversee pharmaceutical industry-physician financial relationships. These countries rely on professional and/or industry ethical codes, anti-kickback laws, and fair trade practice laws. They restrict kickbacks the most strictly, allow wide latitude on gifts, and generally permit drug firms to fund professional activities and associations. Consequently, to avoid legal liability, drug firms often replace kickbacks with gifts and grants. The paper concludes by proposing reforms that address problems that persist when firms replace kickbacks with gifts and grants based on the experience of the three countries. [ABSTRACT FROM AUTHOR]