| 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 | 
| leucht2020 | Antipsychotic equivalent key from Leucht et al. 2020 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 |