RT Journal Article SR Electronic T1 Cooperative effect of adenosine deaminase and ABO-secretor genetic complex on susceptibility to childhood asthma JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1613 OP 1615 DO 10.1183/09031936.02.00062302 VO 20 IS 6 A1 N. Bottini A1 F. Ronchetti A1 F. Gloria-Bottini YR 2002 UL http://erj.ersjournals.com/content/20/6/1613.2.abstract AB