anchor.diff:  AMER FOLKLORE SOC|AMERICAN FOLKLORE SOCIETY
   AMER INST AERONAUT ASTRONAUT|AMERICAN INSTITUTE OF AERONAUTICS AND ASTRONAUTICS
   AMER INST AERONAUTICS  ASTRONAUTICS|THE AMERICAN INSTITUTE OF AERONAUTICS AND ASTRONAUTICS
  +AMERICAN INSTITUTE AERONAUTICS ASTRONAUTICS|THE AMERICAN INSTITUTE OF AERONAUTICS AND ASTRONAUTICS
   AMER INST BIOLOGICAL SCI|AMERICAN INSTITUTE OF BIOLOGICAL SCIENCE
   AMER INST MATHEMATICAL SCI|AMERICAN INSTITUTE OF MATHEMATICAL SCIENCES
   AMER INST MATHEMATICAL SCIENCES|AMERICAN INSTITUTE OF MATHEMATICAL SCIENCES
   AMER INST PHYSICS|AMERICAN INSTITUTE OF PHYSICS
  +AMERICAN INSTITUTE PHYSICS|AMERICAN INSTITUTE OF PHYSICS
   AMER JOURNAL HEALTH PROMOTION INC|AMERICAN JOURNAL OF HEALTH PROMOTION INC
   AMER MEDICAL ASSOC|AMERICAN MEDICAL ASSOCIATION
   AMER MUSEUM NATURAL HISTORY|AMERICAN MUSEUM OF NATURAL HISTORY
  
positive.code: POLISH ACAD SCIENCES INST PHYSICS|POLISH ACADEMY OF SCIENCES INSTITUTE OF PHYSICS
  PRECAST/PRESTRESSED CONCRETE INST|PRECAST/PRESTRESSED CONCRETE INSTITUTE (PCI)
  PUBLIC LIBRARY SCIENCE|PUBLIC LIBRARY OF SCIENCE
  RADIOLOGICAL SOC NORTH AMERICA|RADIOLOGICAL SOCIETY OF NORTH AMERICA
  Reed Business Information Ltd|REED BUSINESS INFORMATION LTD
  REVISTA BIOTA NEOTROPICA|BIOTA NEOTROPICA
  
negative.code: ASSOCIATION MILITARY SURGEONS US|ASSOCIATION OF MILITARY SURGEONS OF THE UNITED STATES
  AUSTRALIAN PHYSIOTHERAPY ASSOC|AUSTRALIAN PHYSIOTHERAPY ASSOCIATION
  BAISHIDENG PUBL GRP CO LTD|BAISHIDENG PUBLISHING GROUP COMPANY LIMITED
  BOTANICAL SOC AMER INC|BOTANICAL SOCIETY OF AMERICA
  BOTANICAL SOCIETY AMERICAN INC|BOTANICAL SOCIETY OF AMERICA
  BRITISH CATTLE VETERINARY ASSOC|BRITISH CATTLE VETERINARY ASSOCIATION
  BRITISH HERPETOL SOC|BRITISH HERPETOLOGICAL SOCIETY
  