Find data for admission table

[skeating]

For a fixed number of mrn we want to produce a table with the following columns:	Name	Datatype	explanation
visit	big int	the foreign key that links the visit to the person
person_id	mrn	the unique identifier for the person
age	datetime	the date of birth of the person
gender	text	the gender of the person
ethnicity	text	the ethnicity of the person
hospital_admission_datetime	datetime	the date on which the person was admitted / the date on which the visit started
admitting_source_value	text	the record of where the person came from
hospital_discharge_datetime	datetime	the date on which the person was discharged/ the date the visit ended
discharge_to_source_value	text	record of where the person went to