Kellogg retired from this position in 1936 because of declining health.

He retired because of health problems, effective December 1, 2006, with more than a year remaining in his sixth term.

He eventually had to retire because of health problems sustained during the war.

He was forced to retire because of injury in 1987.

He retired 10 years ago because of an injured left shoulder.

Graham said that he had to retire because of his failing health.

He retired because of technical problems from 2nd place, 2 special stages before the finish.

In 1976 he came ashore to retire because of his wife's declining health.

He retired in 2000 because of bad health and to devote his time to scientific research.

Unfortunately, he was forced to retire six months later because of health problems.