Relationship of serum leptin level with irritable bowel syndrome oleh Shahryar Semnani (MD), Gholamreza Roshandel (MD), Abbasali Keshtkar(PhD), Laily Najafi (MD), Taghi Amiriani (MD), Mehran Farajollahi (MD), Abdolvahab Moradi (PhD), Hamidreza Joshaghani (PhD), Amirhossein Noohi (MD), Nafiseh Abdolahi (MD)