21.   Their homocysteine levels were measured and their health was monitored for eight years.

22.   Their health was monitored over three flu seasons.

23.   Biologists truck to the woods alongside foresters to monitor the health of plants and animals.

24.   But it does not eliminate the need to continue monitoring their health, the lead researcher said.

25.   But it urged these countries to monitor the health of workers handling fish for human consumption.

26.   By enrolling prostitutes in social security, the government hopes to identify them and monitor their health better, Social Welfare Secretary Vinicius Carvalho Pinheiro said.

27.   In response to earlier criticism, race officials have gone to great lengths to monitor dog health on the trail, with teams of volunteer veterinarians at every checkpoint.

28.   In response to earlier critics, race officials have gone to great lengths to monitor dog health on the trail, with teams of volunteer veterinarians at every checkpoint.

29.   It does not eliminate the need to continue monitoring their health, the lead researcher said.

30.   Jail officials said they are monitoring the health of detainees who have refused meals and only one inmate has required medical attention.