Proceedings of the Joint Proceedings of Reasoning with Ambiguous and Conflicting Evidence and Recommendations in Medicine (MedRACER 2018) and the 3rd International Workshop on Ontology Modularity, Contextuality, and Evolution (WOMoCoE 2018) co-located with the 16th International Conference on Principles of Knowledge Representation and Reasoning (KR 2018), Tempe, Arizona, USA, October 29th, 2018