• Cochrane Db Syst Rev · May 2011

    Editorial Comment

    Phosphodiesterase 4 inhibitors for chronic obstructive pulmonary disease.

    • Milo Puhan.
    • Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe Street, Mail room 5010, Baltimore, MD, USA, 21205.
    • Cochrane Db Syst Rev. 2011 May 11; 2011 (8): ED000028ED000028.

    no abstract available

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