http://www.mass.gov/Eeohhs2/docs/dph/cdc/factsheets/head_lice_pt.pdf
http://www.gef.be.ch/site/gef_kaza_schulaerztl_dienst_merkblatt_laeuse_p.pdf
http://www.hsph.harvard.edu/headlice.html#acquire
Piolho
