Idiopathic Pulmonary Fibrosis Registry China study (PORTRAY): protocol for a prospective, multicentre registry study | BMJ Open

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Respiratory medicine

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Idiopathic Pulmonary Fibrosis Registry China study (PORTRAY): protocol for a prospective, multicentre registry study

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Cite this article as:: Xie B, Ren Y, Geng J, et al

Idiopathic Pulmonary Fibrosis Registry China study (PORTRAY): protocol for a prospective, multicentre registry study

BMJ Open 2020;10:e036809. doi: 10.1136/bmjopen-2020-036809