google.com.sg
type copy and paste "MediShield" into the search bar
click on either the first 2 links
you will see a FAQ
http://www.pqms.moh.gov.sg/apps/fcd_faqmain.aspx?qst=2fN7e274RAp%2bbUzLdEL%2fmJu3ZDKARR3p5Nl92FNtJid2LW%2fFkqj%2fitg7YYNUHrmRHKxRTWn16icEJftL8ehBqZfPVoBPoisI7dVHH7WG53CwOQsyTUOY6ceQFhOQNTO1lwbTl%2bmCNaaXGfcrswNZ1K1u3MBAX4EB2X7RjfGlBKxo6x8bPMoMSUDzbB9pWzbSWR3ZernZbCk%3d
can't be bothered to hotlink it for you after typing all that
above.