Patterson Helbo

Exploring features of wood anatomy associated with fire scars found on fossil tree trunks is likely to increase our knowledge of the environmental and ecological processes that occurred in ancient forests and of the role of fire as an evolutionary force. In Petrified Forest National Park, Arizona, where Late Triassic fossil trees are exposed, we…[Read more]

Despite increases in cannabis use generally and for pain management, data regarding cannabis use in patients undergoing surgery are lacking. This study examined the prevalence of cannabis use among patients undergoing elective surgery and explored differences in clinical characteristics and surgical outcomes between cannabis users and non-cannabis…[Read more]

ase in animals as well as humans which can result in economic loss.

Universal access to family planning has been emphasized by the international development agenda, as evident in theSustainable DevelopmentGoal 3.7. This notwithstanding, theuse of modern contraceptives has been minimal in low- and middle-income countries, especially inPapua New…[Read more]