Similarly , many gastrointestinal tissue biopsies and surgical specimens are accurately diagnosed without referral to a gastrointestinal pathologist .
Internal medicine physicians treat many gastrointestinal conditions without referral to a gastroenterologist specialist .
Many gastrointestinal tissue biopsies and surgical specimens are accurately diagnosed without referral to a gastrointestinal pathologist .
Internal medicine physicians treat many gastrointestinal conditions without referral to a gastroenterologist specialist .