No blood pressure screenings are scheduled for next Wednesday at North Arundel Hospital's storefront in Arundel Mills Mall in Hanover. The community events calendar in today's Anne Arundel Extra, which was printed in advance, contains an incorrect listing.

A June 8 Metro article incorrectly said that the D.C. Council may not apply laws retroactively. The council may apply laws retroactively but may not impose penalties retroactively.

A June 8 Business item misstated the headquarters city of Cogent Communications Group. The company is based in the District, not in Columbia.

A graphic based on Metro budget documents and accompanying a June 5 article on the Metro system showed that Montgomery and Prince George's counties had paid operating subsidies for Metro service. The funding came from the state of Maryland and flowed through the counties.

A June 5 Arts article incorrectly said that Natalie Wood won an Oscar for "Splendor in the Grass." She received an Academy Award nomination for the 1961 movie but did not win the award for best actress.

A June 2 article incorrectly said that patients in a clinical trial of a vaccine to prevent shingles were cared for through the Department of Veterans Affairs medical system. Six of the 22 hospitals that recruited volunteers for the study were outside the VA system and contributed 27 percent of the 38,546 participants.