. . "0"^^ . . "an ulcer of the mucous membrane lining of the alimentary tract"@en-us . "0.625"^^ . . . . "peptic ulcer"^^ . . "14212402-n"^^ . . . "113405013"@en-us . . "peptic ulcer"@en-us . . "peptic ulceration"@en-us . . "114212402"^^ .