Which of the following content is not recommended by Morgen for inclusion in a review of substance use history?

A) Age at first use
B) Frequency, amount, and administration of the substance
C) Reason for first use
D) Any periods of prior abstinence > 30 days

Morgen suggests that understanding the context of substance use, including age at first use, frequency, amount, and administration of the substance, and any periods of prior abstinence longer than 30 days, is important. However, the reason for first use is not specifically recommended by Morgen for inclusion in a review of substance use history, as the focus is more on the patterns and impacts of the substance use rather than the initial motivation.