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- [5] 31st Congress of the European Society of Cardiology PREFACE NETHERLANDS HEART JOURNAL, 2009, 17 : 3 - 3
- [8] 31st Congress of the German Society for Perinatal Medicine Abstracts ZEITSCHRIFT FUR GEBURTSHILFE UND NEONATOLOGIE, 2023, 227 : E145 - E266
- [10] 31st Congress of the Spanish Society of Family and Community Medicine ATENCION PRIMARIA, 2011, 43 (06): : 277 - 278