"I don't know" needs to be followed by "perhaps we can find out".
BMJ
; 367: l6359, 2019 11 05.
Article
in En
| MEDLINE
| ID: mdl-31690572
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
BMJ
Journal subject:
MEDICINA
Year:
2019
Document type:
Article
Affiliation country:
Estados Unidos
Country of publication:
Reino Unido