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. 2018 Nov 4;15(11):2456. doi: 10.3390/ijerph15112456
R1=C41C1C2C3C1{s4}{s4,s3}{s1}C2C3{s4, s5}{s7}{s4}{s5}{s3}{s4} R2=C42C1C2C3C1{s4}{s2}{s5,s4}C2C3{s6}{s3,s4}{s4}{s1}{s7}{s4}
R3=C43C1C2C3C1{s4}{s7}{s6,s5}C2C3{s1}{s2,s3} {s4}{s5}{s3}{s4} R4=C1C41C42C43C41{s4}{s3,s2}{s1}C42C43{s5, s6}{s7}{s4}{s5}{s3}{s4}
R5=C2C41C42C43C41{s4}{s4,s3}{s4}C42C43{s4, s5}{s4}{s4}{s3}{s5}{s4} R6=C3C41C42C43C41{s4}{s5}{s5,s4}C42C43{s3}{s3,s4}{s4}{s4}{s4}{s4}
R7=C1C11C12C13C11{s4}{s5}{s4,s3}C12C13{s3}{s4,s5}{s4}{s6}{s2}{s4} R8=C2C21C22C21{s4}{s5}C22{s3}{s4}
R9=C3C21C22C23C21{s4}{s5,s4}{s5}C22C23{s3,s4}{s3}{s4}{s2}{s6}{s4}