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Over the past twenty years, many low- and middle-income countries have experimented with health insurance options. While their plans have varied widely in scale and ambition, their goals are the same: to make health services more affordable through the use of public subsidies while also moving care providers partially or fully into competitive markets.

Colombia embarked in 1993 on a fifteen-year effort to cover its entire population with insurance, in combination with greater freedom to choose among providers. A decade later Mexico followed suit with a program tailored to its federal...

Following a description of various forms of cell death and of ovary development and function in mammals, cell death processes in ovarian somatic cells and oocytes are described at cytological, physiological and molecular levels, as well as at differing ages.