In terms of material requirement, the law prescribes that only mentally sound adults under circumstances of no cheat, intimidation and improper influence can abandon treatment validly.

• 对于实质要件，法律上要求必须是成年人并且心智健全的人，在没有欺诈、胁迫、不当影响的情形下，才能作出有效的放弃治疗。