| − | *[http://www.ncbi.nlm.nih.gov/pubmed/6895540 The "gay bowel syndrome" and amebiasis as sexually transmitted diseases in Sweden] - Lakartidningen. 1981 Aug 26;78(35):2924 (Article in Swedish) | + | *[http://www.ncbi.nlm.nih.gov/pubmed/6895540 The "gay bowel syndrome" and amebiasis as sexually transmitted diseases in Sweden] - Lakartidningen. 1981 Aug 26;78(35):2924 |