Lacking sufficient data to conduct an epidemiological investigation, the authors of the dead-cows study (veterinarians Michelle Bamberger and Robert Oswald, who is on the faculty at Cornell University) reviewed 25 recent cases where health problems among animals, and their owners, were suspected of being linked to natural gas drilling. They interviewed animal owners in six states affected by gas drilling: Colorado, Louisiana, New York, Ohio, Pennsylvania, and Texas. Since many of the individual cases are in litigation, however, details about who, where, and when are omitted from the published article.
Via
MOVUS