_dta:
  1.  by Jean Roth , jroth@nber.org , 4 Nov 2016
  2.  Varialbes npropname subname actnumstr actingunit pharmclas have been
      truncated to 244 characters for pre-Stata13

markname:
  1.  Abbreviated New Drug Application (ANDA)
  2.  ANDA is "an application for a U.S. generic drug approval for an existing
      licensed medication or approved drug".
  3.  Biologic License Application (BLA)
  4.  New Drug Application (NDA)

deasched:
  1.  DEA Schedules I-V are defined in
      http://www.ecfr.gov/cgi-bin/text-idx?rgn=div5&node=21:9.0.1.1.9
  2.  Code of Federal Regulations (CFR) Title 21: Food and Drugs PART
      1308-SCHEDULES OF CONTROLLED SUBSTANCES

  obs:       103,023                          
 vars:            20                          4 Nov 2016 08:58
 size:   214,184,817                          (_dta has notes)
-------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------
prodid          str47   %47s                  Product ID
ndc             str10   %10s                  Product National Drug Code (NDC)
prodtype        str27   %27s                  Product Type Name
propname        str226  %226s                 Propprietary Name
propsuf         str126  %126s                 Proprietary Name Suffix
npropname       str244  %244s                 Nonproprietary Name
dosename        str48   %48s                  Dosage Form Name
routename       str143  %143s                 Route Name
stmarkdatestr   str23   %23s                  Start Marketing Date String
stmarkdate      float   %td                   Start Marketing Date
endmarkdatestr  str10   %10s                  End Marketing Date String
endmarkdate     float   %td                   End Marketing Date
markname        str40   %40s                * Marketing Category Name
appnum          str47   %47s                  Application Number
labelname       str100  %100s                 Labeler Name
subname         str244  %244s                 Substance Name
actnumstr       str244  %244s                 Active Numerator Strength
actingunit      str244  %244s                 Active Indgredient Unit
pharmclas       str244  %244s                 Pharm Classes
deasched        str4    %9s                 * DEA Schedule
                                            * indicated variables have notes
-------------------------------------------------------------------------------
Sorted by: ndc  prodid