Springer Science and Business Media Deutschland GmbH.

Elsevier Science Publishing Company, Inc..

Springer-Verlag GmbH.

European Respiratory Society.

Springer Science and Business Media Deutschland GmbH.

ELSEVIER.

ELSEVIER SCIENCE BV, PO BOX 211, AMSTERDAM, NETHERLANDS, 1000 AE.

Elsevier B.V..

ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD.

Institute of Physics.

Springer Science and Business Media Deutschland GmbH.

Ashley Publications Ltd..

Open Exploration Publishing Inc.

Centre for Strategic Planning of the Federal Medical and Biological Agency.

China Agricultural University.