dr. paul halverson, dean, indiana university's school of public health. welcome. secondly, dr. chapman sledge, chief medical officer, cumberland heights. welcome. third, dr. robert waller, chair of the american society of addictions. then dr. kenneth katz, department of emergency medicine, section of medical toxicology, lehigh valley health network, welcome. and i don't see dr. alan anderson yet, president of the american orthopedic society for sports medicine. so thank you for coming. your written testimony will be made a part of the record. you'll each have five minutes to summarize your testimony. and after opening statements, we will do the questioning. so dr. halverson, you're recognized for five minutes for your summary. >> thank you, mr. chairman. chairman pitts, ranking member green, representative books, thank you for the opportunity to testify today. i come before you today as the founding dean of the richard m. fairbanks school of public health as well as the former state health officer of arkansas, to discuss a very important and far-reaching public health issue, th