Useful links

Main sites
NCBI National Center for Biotechnology Information
WHO World Health Organization.
CDC Centers for Disease Control and Prevention
PDB Protein Data Bank

Other resources
IASR International Academy of Sex Research
Medscape Medical database
CIBR Croatian Institute for Brain Research
UN United Nations
WMO World Meteorological Organization
Harvard University
IRB Institute Rudjer Boskovic
HAZU Croatian Academy of Sceince and Art