Erratum: “New contrast agents for photoacoustic imaging and theranostics: Recent 5-year overview on phthalocyanine/naphthalocyanine-based nanoparticles” [APL Bioeng. 5, 031510 (2021)]

The following conflict of interest disclosure statement was omitted from the published paper:¹ “C. Kim has financial interest in Opticho, Inc., which, however, did not support this research.”