TY - RPRT TI - Two-photon photodynamic therapy. AU - J D Bhawalkar AU - N D Kumar AU - C F Zhao AU - P N Prasad PY - 1997 DO - 10.1089/clm.1997.15.201 UR - https://pubmed.ncbi.nlm.nih.gov/9612170/ ID - 9612170 ER -