Complex sentence: However, death caused by helium is rare, with only two fatalities reported between 2000 and 2004 in the United States, including a man who died in N. Carolina of barotrauma in 2002.
Split into simpler sentences: However, death caused by helium is rare, with only two fatalities reported between 2000 and 2004 in the United States. This included a man who died in N. Carolina of barotrauma in 2002.