Reliability assessment and validation of the postacne hyperpigmentation index (PAHPI), a new instrument to measure postinflammatory hyperpigmentation from acne vulgaris by Savory, Stephanie A., MD, Agim, Nnenna G., MD, Mao, Rui, BS, Peter, Shayna, BS, Wang, Casey, BS, Maldonado, Gerardo, BA, Bearden Dietert, Jessica, BS, Lieu, Tiffany Jane, BA, BS, Wang, Christy, BS, BM, Pretzlaff, Kara, BA, Das, Shinjita, MD, Vandergriff, Travis, MD, Lopez, Isha E., MD, Litzner, Brandon R., MD, Hynan, Linda S., PhD, Arellano-Mendoza, Maria Ivonne, MD, Bergstresser, Paul R., MD, Pandya, Amit G., MD

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