The document discusses the importance of defining an essential package of health services (EPHS) for a country with limited resources. The EPHS should include the most cost-effective interventions that address the largest disease burden and can realistically be made available to the entire population by a target year, while staying within the country's budget constraints. Over time, the EPHS will expand from a basic to an intermediate to a comprehensive package as availability and affordability increase. National health plans should focus on expanding service availability, reducing out-of-pocket costs, and achieving universal health coverage through successive EPHS.