transformers gguf llama medical health llama2 text-generation en dataset:bigbio/med_qa dataset:medmcqa dataset:bigbio/pubmed_qa dataset:epfl-llm/guidelines arxiv:2311.16079 base_model:epfl-llm/meditron-70b base_model:quantized:epfl-llm/meditron-70b license:llama2 text-generation-inference region:us