9.6 Relationship with the tested product: Medical institutions will evaluate the relationship between adverse events and the tested product according to the following standards. ① unrelevant: there is evidence proving that adverse events are caused by other reasons. For example, adverse events are obviously caused by the disease, adverse events are consistant with effects or adverse reactions of the drugs, or adverse events had already existed before using the tested product research. ② Not likely to be relevant: it seems to have a time-relationship with the use of tested product, but the occurrence of adverse events can be explained by other reasons. ③Probably relevant: it seems to have a time-relationship with the use of tested product, and adverse events seem to have a causal relationship with the product. ④ Surely relevant: it seems to have a time-relationship with the use of tested product, and no other reasons can explain the occurrence of adverse events. Adverse events diminish or disappear after stopping using tested products, and symptoms occur once again with the use of tested products.