Allan Rosenfield, a leading advocate for women's health, died on Sunday at the age of 75. For more than four decades, Dr. Rosenfield worked on improving women's reproductive health and strategies to address maternal deaths due to AIDS in developing countries. His influential study “Maternal Mortality — A Neglected Tragedy: Where is the M in MCH?” drew attention to the many third-world women who die in pregnancy and childbirth. Recently his work focused on the Mother-to-Child Transmission program, a initiative to combat the passing of H.I.V. from mothers to their children, which has brought health care to more than 500,000 women and infants. [NY Times]