_dta:
  1.  by Jean Roth , jroth@nber.org , 21 Sep 2016
  2.  Source URL: http://www.dartmouthatlas.org/tools/downloads.aspx
  3.  Source Workbook: ZipHsaHrr02.xls
  4.  Source Worksheet: ziphsahrr02.csv

  obs:        41,398                          
 vars:             8                          21 Sep 2016 14:35
 size:     2,773,666                          (_dta has notes)
-------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------
zipcode         str5    %9s                   ZIP Code
hsanum          long    %10.0g                Hospital Service Area (HSA)
                                                Number
hsacity         str24   %24s                  Hospital Service Areas (HSA) City
hsastate        str2    %9s                   Hospital Service Areas (HSA)
                                                State
hrrnum          int     %10.0g                Hospital Referral Regions (HRR)
                                                Number
hrrcity         str24   %24s                  Hospital Referral Regions (HRR)
                                                City
hrrstate        str2    %9s                   Hospital Referral Regions (HRR)
                                                State
year            float   %9.0g                 Year
-------------------------------------------------------------------------------
Sorted by: zipcode  hrrnum  hsanum  year