au.\*:("HELLING M")
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DRUG RECORDING AND CLASSIFICATION BY THE WHO RESEARCH CENTRE FOR INTERNATIONAL MONITORING OF ADVERSE REACTIONS TO DRUGSHELLING M; VENULET J.1974; METHODS INFORM. MED.; GERM.; DA. 1974; VOL. 13; NO 3; PP. 169-178; ABS. ALLEM.; BIBL. 21REF.Article