Correction
"In the article `Marriage of light and sound,' which appeared in week 45, it was wrongly mentioned that PAM uses ionizing radiation. X-Ray mammography uses ionizing radiation, while PAM does not. We apologize for the error."
"In the article `Marriage of light and sound,' which appeared in week 45, it was wrongly mentioned that PAM uses ionizing radiation. X-Ray mammography uses ionizing radiation, while PAM does not. We apologize for the error."