Kokosow A N, Neklassow J F, Matkowsky S K, Alexandrow A L
Allunions-Forschungsinstitut für Pulmologie des MfGe, UdSSR, Leningrad.
Z Erkr Atmungsorgane. 1989;173(2):138-44.
Clinical and functional characteristics of chronic obstructive bronchitis can be useful for diagnostics of pulmonary hypertension. Development of pulmonary hypertension shows 3 stages: latent, transitory and stable phase.
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