What is the fine-grained topic of the following text: The Leading Aromatherapy Associations (Alliance of International Aromatherapists (AIA), International Aromatherapy and Aromatic Medicine Association, Aromatherapy Trade Council, and others) all state that essential oils should not be taken internally (regardless of purity or organic origin) unless under the guidance of a health care practitioner trained at an appropriate level . Only return the topic.
Guidelines on internal use of essential oils by Leading Aromatherapy Associations