BREAST CANCER STUDY: Massachusetts General Hospital and Dana Farber Cancer Institute are doing a 5-year study on women at high risk for breast cancer. For information call 888-566-9747.
FRESH AIR FUND: An independent, not-for-profit agency that provides free summer vacations for children from low-income communities in New York. Seeking host families in the Merrimack Valley area to participate. Call Deborah Carter, 978-692-9673 or freshair.org.
HOSPITAL VOLUNTEERS: Lahey Clinic Medical Center, 41 Mall Road, Burlington, is seeking volunteers for late-afternoon and early evening shifts to provide support and companionship to patients and their families. Volunteers also work with medical staff and assist with the transportation of patients, specimens, medical equipment and medical records. A daily food stipend is provided. Call Mary Iodice, 781-744-8803.
THE SAMARITANS: Seeking volunteers to staff listening helpline, a free, confidential 24-hour-a-day service in the Boston and Framingham area. Call 617-536-2460 or visit samaritanshope.org.