Authorship contribution:
1. Natalia Acedo (nataliaacedo@hotmail.com): main author, corresponding author. given final approval of the version to be published. Coordination in the drafting process. Responsible for the coagulation laboratory where the study presented in the case was performed.
2. Alejandro Alonso (aacabrero94@gmail.com): co-author, he was involved in the drafting of the article and revision of the final version.
3. Eliana Samantha Feijoó (sammyfeijoo@gmail.com): co-author, she was involved in the drafting of the article.
4. Cristina García (garciaherce.cristina@gmail.com): co-author, she was involved in the revisión of the final version.
5. Ana M Ortiz (lanult@yahoo.es): co-author, she was involved in the revisión of the final version.
6. Adrián Alegre (adrian.alegre@telefonica.net): co-author, head of haematology department.
The author(s) declare that the research was conducted in accordance with the principles embodied in the Declaration of Helsinki and in accordance with local statutary requirements. All participants gave written informed consent to publication of this article.
Acknowledgments :
We thank the Haematology and Rheumatology Departments of the Hospital Universitario de La Princesa (Madrid, Spain) for their support in the publication of this case.