Declaration of competing financial interests
From the following article
Photodynamic Therapy: Two photons are better than one
Stanley Brown
Nature Photonics 2, 394 - 395 (2008)
doi:10.1038/nphoton.2008.112
Declaration: Stanley Brown is employed by Photopharmica, a small company developing photodynamic therapy for infection. The company has no current or planned interests in two-photon photodynamic therapy.
