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Articles: Survival in Primary Pulmonary Hypertension with Long-Term Continuous Intravenous Prostacyclin
- Robyn J. Barst, MD;
- Lewis J. Rubin, MD;
- Michael D. McGoon, MD;
- Edgar J. Caldwell, MD;
- Walker A. Long, MD; and
- Paul S. Levy, MD
The Editors welcome submissions for possible publication in the Letters section. Authors of letters should:
•Include no more than 300 words of text, three authors, and five references
•Type with double-spacing
•Send three copies of the letter, an authors' form signed by all authors, and a cover letter describing any conflicts of interest related to the contents of the letter.
Letters commenting on an Annals article will be considered if they are received within 6 weeks of the time the article was published. Only some of the letters received can be published. Published letters are edited and may be shortened; tables and figures are included only selectively. Authors will be notified that the letter has been received. If the letter is selected for publication, the author will be notified about 3 weeks before the publication date. Unpublished letters cannot be returned.
Annals welcomes electronically submitted letters.
Correction: Incorrect Formula
A recent article on survival in primary pulmonary hypertension [1] contained an error in the formula for predicting survival. The correct formula is as follows:
P(t) = (H[t])A(x,y,z)
H(t) = (0.88 −0.14 t + 0.01t2)
A (x,y,z) = e sup (0.007325x + 0.0526y −0.3275 z)
where
x = mean pulmonary artery pressure
y = mean right atrial pressure
z = cardiac index
The Editors welcome submissions for possible publication in the Letters section. Authors of letters should:
•Include no more than 300 words of text, three authors, and five references
•Type with double-spacing
•Send three copies of the letter, an authors' form signed by all authors, and a cover letter describing any conflicts of interest related to the contents of the letter.
Letters commenting on an Annals article will be considered if they are received within 6 weeks of the time the article was published. Only some of the letters received can be published. Published letters are edited and may be shortened; tables and figures are included only selectively. Authors will be notified that the letter has been received. If the letter is selected for publication, the author will be notified about 3 weeks before the publication date. Unpublished letters cannot be returned.
Annals welcomes electronically submitted letters.
- Copyright ©2004 by the American College of Physicians
