Unconventional oil and gas development and health outcomes: A scoping review of the epidemiological research

Hydraulic fracturing together with directional and horizontal well drilling (unconventional oil and gas (UOG) development) has increased substantially over the last decade. UOG development is a complex process presenting many potential environmental health hazards, raising serious public concern. To conduct a scoping review to assess what is known about the human health outcomes associated with exposure to UOG development. We performed a...