6770
Physicians should be aware of the risk of severe AIHA in CLL patients with a history of AIHA or positivation of the DAT during previous fludarabine administration , or in case of secondary fixation of complement to the red cell membrane occurring during fludarabine treatment .
 adverse effect: AIHA, fludarabine; adverse effect: AIHA, fludarabine; adverse effect: AIHA, fludarabine; adverse effect: AIHA, fludarabine; adverse effect: positivation of the DAT, fludarabine; adverse effect: positivation of the DAT, fludarabine
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
 Entity Pairs:  AIHA, fludarabine; AIHA, fludarabine; AIHA, fludarabine; AIHA, fludarabine; positivation of the DAT, fludarabine; positivation of the DAT, fludarabine 
Answer:
 adverse effect: AIHA, fludarabine; adverse effect: AIHA, fludarabine; adverse effect: AIHA, fludarabine; adverse effect: AIHA, fludarabine; adverse effect: positivation of the DAT, fludarabine; adverse effect: positivation of the DAT, fludarabine