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These data were then compared to the tornado record for the year , or " tornado season " following the warm / cold event ( Table 1 ) . But , resources themselves are not homogeneous . The lending portion of the ILL process is supported by the first sale doctrine ( Section 109 ) that permits libraries to purchase books and other material and lend them to their own users or to other libraries . But , in order to be truly effective as educational tools , they need to do more than provide access to quality resources . But if they are not educated about what constitutes illegal compounding , they may fall prey to salespeople who promise cost savings on compounded drugs . If your doctor suspects that an underlying medical condition , such as meningitis or subarachnoid hemorrhage , is the cause of your headaches , he or she may recommend a spinal tap ( lumbar puncture ) . Natural heritage sites are restricted to those natural areas that ( 1 ) furnish outstanding examples of the Earth 's record of life or its geologic processes , ( 2 ) provide excellent examples of ongoing ecological and biological evolutionary processes , ( 3 ) contain natural phenomena that are rare , unique , superlative , or of outstanding beauty , or ( 4 ) furnish habitats for rare or endangered animals or plants or are sites of exceptional biodiversity . But , HCFA may condition a provider 's participation in Medicare on that provider being located in a structure that complies with Life Safety Code requirements whether or not the provider is in control of the entire premises of that structure . Gabapentin ( Neurontin ) , another anti-seizure medication , is considered a second-line treatment agent . But it so angered many social conservatives who have consistently backed Perry that they suggested money and political ties to the vaccine 's manufacturer were behind the decision .