File:           loader.py
Description:    contains all the functions for retrieving and interacting with data
Functions:      get_old_data #deprecated
                get_patient_by_EMPI
                get_data
                clean_data
                get_dummy_non_anonymized_patient
                explore

File:           extract_data.py
Description:    contains all functions for finding specific values and fields in the data
Functions:      get_operation_date
                get_doc_rel_dates
                get_ef_values
                get_doc_keywords
                is_note_doc
                get_date_key
                parse_note_header

File:           language_processing.py
Description:    contains functions for parsing values from fields
Functions:      parse_m_d_y
                parse_m_y
                parse_date
                format_date
                get_sentence
                split_sentences
                is_sentence_end

File:           build_graphs.py
Description:    executes plot building functionality
Functions:      plot_num_docs