add_key                 Combine 2 keys with base key taking precedence
check_ap                Checks whether antipsychotic names are in the
                        key
check_key               Check whether a conversion key is the expected
                        format
davis1974               Chlorpromazine equivalent key from Davis 1974
                        data
gardner2010             Chlorpromazine equivalent key from Gardner et
                        al. 2010 data
gardner2010_withsai     Chlorpromazine equivalent key from Gardner et
                        al. 2010 data
leucht2016              Chlorpromazine equivalent key from Leucht et
                        al. 2016 data
to_ap                   Calculates equivalent doses
to_cpz                  Calculates chlorpromazine-equivalent doses
trim_key                Modify the names in a conversion key to only
                        include the first word
woods2003               Chlorpromazine equivalent key from Woods 2003
                        data
