Erratum to: Impact of the nitric oxide-donor pentaerythrityl-tetranitrate on perinatal outcome in risk pregnancies: a prospective, randomized, double-blinded trial

Abstract

On page 1 “adjusted relative risk (RR)“ should be changed to “adjusted odds ratio (OR)”. On page 1, 3 and in the table head of table 2 “adjusted RR” should be changed to “adjusted OR”. On page 3 “Mantel-Haenszel estimates of relative risk” should be changed to “Mantel-Haenszel estimates of odds ratios”. In Table 2, caption b “Mantel-Haenszel estimate of relative risk” should be changed to “Mantel-Haenszel estimate of odds ratio”.