1.   A government hearing on proposed changes in the way livers are allocated for lifesaving transplants offered a rare glimpse on Tuesday of acrimony among transplant centers.

2.   A government hearing on proposed changes in the way livers are allocated for lifesaving transplants offered a rare glimpse Tuesday of acrimony among transplant centers.

3.   He has assisted a presidential commission grappling with the definition of death, as well as a federal agency studying how best to allocate livers for transplant patients.

4.   Within three months, Dr. Donna E. Shalala, the secretary of health and human services, will submit final rules for allocating livers.

5.   Within three months, Donna Shalala, the secretary of health and human services, will submit final rules for allocating livers.