Abbreviation for antipernicious anemia factor.
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action potential amplitude; aldosterone-producing adenoma; Ambulatory Pediatric Association; American Pancreatic Association; American Physiotherapy Association; American Podiatric Association; American Psychiatric Association; American Psychoanalytic Association; American Psychological Association; American Psychopathological Association; American Psychotherapy Association; aminopenicillanic acid; anterior margin of pulmonary artery; antipernicious anemia [factor]; antiphospholipid antibody; antiproliferative antibody; arcuate premotor area; azidophenacyl
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American Pharmaceutical Association; American Podiatric Association; American Psychiatric Association; American Psychological Association.Medical dictionary. 2011.