The March 18 obituary of George F. Kennan incorrectly said that the diplomat and historian was educated at a military school in Delaware. Kennan graduated from a military academy in Delafield, Wis.

A March 15 article contained an incorrect figure for the number of late-term abortions performed in Kansas. The pertinent sentence should have read, "In 2003, doctors in Kansas performed 318 abortions on women -- 11 of them Kansas residents -- who carried fetuses considered likely to be viable outside the womb."

A March 15 Health article about chronic pain in children misidentified the institution that has begun enrolling youngsters in an acupuncture study. It is the Medical College of Wisconsin, not the University of Wisconsin.

A March 5 article on the refusal of four detained Iranian brothers to accept conditions for their release misstated the legal basis for their detention. They were held under provisions of immigration law, not the USA Patriot Act. The Washington Post is committed to correcting errors that appear in the newspaper. Those interested in contacting the paper for that purpose can send an e-mail to corrections@washpost.com or call the main number, 202-334-6000, and ask to be connected to the desk involved -- National, Foreign, Metro, Style, Sports, Business or any of the weekly sections. In addition, the ombudsman's number is 202-334-7582.