def call_api(db_wrapper, search: dict, page: int, page_length: int):
    """Call literature data base wrapper to query for a specific page.

    Args:
        db_wrapper: object that implements the wrapper interface defined in wrapper/wrapper_interface.py
        search: dict of search terms as defined in wrapper/input_format.py
        page: page number
        page_length: length of page

    Returns:
        results as specified in wrapper/ouputFormat.py
    """
    # page 1 starts at 1, page 2 at page_length + 1
    db_wrapper.start_at((page - 1) * page_length + 1)
    db_wrapper.show_num = page_length
    return db_wrapper.call_api(search)