CONTENIDO: Summary -- An important trend -- Response to information overload -- The core curriculum with options or special study modules -- Aims of this guide -- What is the core curriculum? -- The concept of the core curriculum -- the seven Cs -- Determination of core -- Who decides? -- Criteria of core -- Options or special study modules -- The value of special study modules -- Special study modules and electives -- Topics covered -- Selection criteria -- Problems and management -- Relationship between core and special study modules -- Integrated -- Concurrent -- Intermittent -- Sequential -- Time allocation -- Assessment is important -- Assessment of core -- Assessment of special stydy modules -- Postgraduate studies -- The continuum -- Postgraduate training -- Conclusión -- References.