Which pharmaceutical marketing practice was largely eliminated in the U.S. after the PhRMA Code was revised in 2009, due to concerns about undue influence on prescribing behaviors?

The pharmaceutical industry employs various marketing strategies to promote medications to healthcare providers and patients. However, these strategies are subject to strict regulatory oversight and ethical considerations. This trivia question examines your knowledge about a significant shift in pharmaceutical marketing practices that occurred due to ethical concerns and regulatory changes in the early 2000s.

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Distribution of branded prescription drug samples to physicians
Non-educational gifts and entertainment to healthcare professionals (e.g., tickets to sporting events, resort trips)
Medical journal advertisements for FDA-approved medications
Patient assistance programs for expensive medications