make me details note on GERD for Residency, FCPS, MRCP exam as pdf with diagram and image
"gastroesophageal reflux disease"[MeSH Terms] AND management
"gastroesophageal reflux"[MeSH Terms] AND "proton pump inhibitors"[MeSH Terms]
GERD pathophysiology diagnosis management guidelines 2024 2025 MRCP residency exam
GERD diagnosis management guidelines recommendations