The dangers associated with cell phones could far outweigh those tied to asbestos and smoking, an Australian doctor recently warned in a new report. In his paper, "Mobile Phones and Brain Tumors -- A Public Health Concern," Vini G. Khurana, a staff specialist neurosurgeon at the Canberra Hospital and associate professor of neurosurgery with the Australian National University Medical School, summarizes a 14-month study in which he reviewed previous studies on the effects of mobile phone usage in the medical and scientific literature as well as the Internet and popular press.