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2. Centers for Disease Control and Prevention (CDC) 1999 Preventing Needlestick Injuries in Health Care Settings http://www.cdc.gov/niosh/docs/2000-108/pdfs/2000-108.pdf
3. Central Pollution Control Board (CPCB) 1998 Biomedical waste management
4. Synthetic biology: Bits and pieces come to life;Collins;Nature,2012