Review of Preventive and Social Medicine (Including Biostatistics) The thirteenth edition has been fully revised and updated. Theory has been given at start of each chapter (Theory divided chapter-, topic-, sub-topic wise Small/one-liner points in each topic/Important previous MCQs marked as Q). Key Revision Point Boxes given on side of each topic for Must-Know MCQ facts. New and recent examination-based pattern has been adopted chapter-wise (Focus on Wider coverage, Concept development, One-liner approach, Value-based MCQs, Applied aspect MCQs, Image-based MCQs, Updated Golden Points).