| PMA | index of prevalence and severity of gingivitis, where P = papillary gingiva, M = marginal gingiva, and A = attached gingiva; papillary, marginal, attached [gingiva]; para-methoxyamphetamine; Pharmaceutical Manufacturers Association; phenylmercuric acetate; phorbol myristate acetate; phosphomolybdic acid; premarket approval; primary mental abilities; progressive muscular atrophy; pyridylmercuric acetate |
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