In one study,infected mothers began to take three anti-H.I.V.drugs while breastfeeding for up to six months.

VOA: special.2009.07.29

In one study, researchers examined the pages of five hundred eighteen-year-olds from the United States.

VOA: special.2009.02.18

In one study of photojournalists, they had been exposed to events that mental health professionals would deem traumatic, while roughly one in sixteen met the criteria for PTSD.

VOA: standard.2010.07.01

But now the first worldwide study warns that one in six of the many different kinds of mangroves could disappear.

VOA: special.2010.04.20

Ellen Yeh from the Stanford University School of Medicine in California was one of the authors of the study.

VOA: special.2009.08.03

The study found that more than one-third of the pictures in women's magazines showed babies in unsafe sleep positions.

VOA: special.2009.08.26

Last week, a study was released about a new treatment that combines five medicines for heart disease in one pill.

VOA: special.2009.04.08

The study linked almost one in every five such deaths in two thousand eight to the virus that causes AIDS.

VOA: special.2010.04.14

A study in the United States found that eighty-four percent of undergraduates last year had at least one credit card.

VOA: special.2009.05.28

Their study considers painting sixty-three percent of rooftops white in one hundred large cities in warm areas around the world.

VOA: special.2009.06.19

I have over one hundred different kinds of birds from all over the United States in my study at home."

VOA: special.2010.04.03

The study also found that more than one-quarter of American adults have left the religion in which they were raised.

VOA: special.2010.03.05

But one of the authors of the study, Tim McClanahan from the Wildlife Conservation Society, says fisheries in Africa face another threat.

VOA: special.2009.08.11

Only two areas did not have an overfishing problem in either the new study or the earlier one.

VOA: special.2009.09.08

The study found that one in five children over age two had a low risk of serious injury but received CT scans anyway.

VOA: special.2009.10.28

The study appeared last month in the online journal PLoS One, from the Public Library of Science.

VOA: special.2009.08.03