[Analysis of difficulties in the diagnosis of early gastric cancer].
D005069:Evaluation Studies as Topic; D006801:Humans; D008722:Methods; D009367:Neoplasm Staging; D013270:Stomach / Q000473:pathology; D013274:Stomach Neoplasms / Q000175:diagnosis*; D013997:Time Factors
Analiza trudności w rozpoznawaniu wczesnego raka zołøadka.