About the Authors

Manuel Romero-Gómez

mromerogomez@us.es

Affiliation UCM Digestive Diseases & ciberehd, Valme University Hospital, Sevilla, Spain

Juan Turnes

Affiliation Complejo Hospitalario de Pontevedra, Pontevedra, Spain

Javier Ampuero

Affiliation UCM Digestive Diseases & ciberehd, Valme University Hospital, Sevilla, Spain

Itziar Oyagüez

Affiliation Pharmacoeconomics & Outcomes Research Iberia, Madrid, Spain

Beatriz Cuenca

Affiliation Hospital Infanta Cristina, Parla, Madrid, Spain

Juan Gonzalez-Garcia

Affiliation Hospital Universitario La Paz, Madrid, Spain

Belén Muñoz-Molina

Affiliation Unidad de Hepatología, Roche Farma, Spain

Rocio Aguilar

Affiliation FISEVI, Sevilla, Spain

Sandra Leal

Affiliation FISEVI, Sevilla, Spain

Ramon Planas

Affiliation Hospital Germans Trias i Pujol & ciberehd, Badalona, Barcelona, Spain

Javier Garcia-Samaniego

Affiliation Hospital Carlos III & ciberehd, Madrid, Spain

Moises Diago

Affiliation Hospital General de Valencia, Valencia, Spain

Javier Crespo

Affiliation Hospital Marqués de Valdecilla, Santander, Spain

Jose Luis Calleja

Affiliation Hospital Puerta de Hierro, Madrid, Spain

Miguel Angel Casado

Affiliation Pharmacoeconomics & Outcomes Research Iberia, Madrid, Spain

Ricard Sola

Affiliation Hospital del Mar, IMIM, Barcelona, Spain

Competing Interests

Co-authors Itziar Oyagüez and Miguel Ángel Casado are employed by Pharmacoeconomics & Outcomes Research Iberia. The study was funded by an unrestricted grant from Roche Farma (Spain). The Optim tool has been patented (P201330731). There are no further patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Wrote the paper: JA MR-G. Guarantor of the data: MR-G. Cost-analysis: IO MAC. Acquisition of data: MR-G JT JA BC JG-G BM-M RA SL RP JG-S MD JC JLC RS.