Develop a standardized format for referral letters that ensures consistency across all documents, reducing errors and increasing efficiency. The format should include predefined sections such as patient information, referral details, clinical summary, and recommendations. Incorporate placeholders for essential information such as [PatientName], [ReferralDate], [ReferringPhysician], and [ReferredSpecialist]. Include specific instructions for formatting dates, patient identifiers, and clinical terminology in compliance with healthcare data standards (e.g., HL7). The final letter should be ready for direct upload into the EHR system.