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Table 2 Sixteen disease chapters (classes) and numbers of diseases in each chapter.

From: A genome-wide systems analysis reveals strong link between colorectal cancer and trimethylamine N-oxide (TMAO), a gut microbial metabolite of dietary meat and fat

Disease Class Diseases
Disease Classes Diseases
Certain infectious and parasitic dis-
11,598 Diseases of the circulatory system 5544
Neoplasms 14,158 Diseases of the respiratory system 3156
Diseases of the blood and blood forming organs and certain disorders
involving the immune mechanism
3264 Diseases of the digestive system 5960
Endocrine, nutritional and metabolic
5438 Diseases of the skin and subcutaneous tissue 4390
Mental and behavioural disorders 6162 Diseases of the musculoskeletal system and connective tissue 11520
Diseases of the nervous system 5258 Diseases of the genitourinary system 5247
Diseases of the eye and adnexa 3735 Congenital malformations, deformations and chromosomal abnormalities 9064
Diseases of the ear and mastoid process 1815 Certain conditions originating in the
perinatal period