Appendix 3 to Questions and answers for marketing authorisation holders/applicants on the CHMP Opinion for the Article 5(3) of Regulation (EC) No 726/2004 referral on nitrosamine impurities in human medicinal products(附录3向营销授权持有人/申请人提出问题和答案，《 CHMP意见》第5条第3款（EC）（EC）第726/2004号第726/2004号硝基胺杂质的转诊)