An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Teo PM, Kwan WH, Lee WY, Leung SF, Johnson PJ.Teo PM, et al. Among authors: leung sf.Cancer. 1996 Jun 15;77(12):2423-31. doi: 10.1002/(SICI)1097-0142(19960615)77:12<2423::AID-CNCR2>3.0.CO;2-N.Cancer. 1996.PMID: 8640688
Ho S, Leung SF, Leung WT, Tsao SY, Kwan WH, Choi P, Johnson PJ.Ho S, et al. Among authors: leung wt, leung sf.Eur J Cancer B Oral Oncol. 1996 Jul;32B(4):242-5. doi: 10.1016/0964-1955(95)00084-4.Eur J Cancer B Oral Oncol. 1996.PMID: 8776420