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| 0001171843-18-001934-index.html | 2018-03-14 08:01:52 | |
| 0001171843-18-001934.txt | 2018-03-14 08:01:52 | |
 0001171843-18-001934-xbrl.zip | 124410 | 2018-03-14 08:01:52 |
| exh_211.htm | 2204 | 2018-03-14 08:01:52 |
| exh_231.htm | 2961 | 2018-03-14 08:01:52 |
| exh_311.htm | 9909 | 2018-03-14 08:01:52 |
| exh_312.htm | 9452 | 2018-03-14 08:01:52 |
| exh_321.htm | 5927 | 2018-03-14 08:01:52 |
| f10k_031318p.htm | 1302172 | 2018-03-14 08:01:52 |
| FilingSummary.xml | 34607 | 2018-03-14 08:01:52 |
| Financial_Report.xlsx | 56637 | 2018-03-14 08:01:52 |
 fistula.jpg | 36537 | 2018-03-14 08:01:52 |
 propatent.jpg | 35407 | 2018-03-14 08:01:52 |
| prto-20171231.xml | 754861 | 2018-03-14 08:01:52 |
| prto-20171231.xsd | 54572 | 2018-03-14 08:01:52 |
| prto-20171231_cal.xml | 35979 | 2018-03-14 08:01:52 |
| prto-20171231_def.xml | 374616 | 2018-03-14 08:01:52 |
| prto-20171231_lab.xml | 321878 | 2018-03-14 08:01:52 |
| prto-20171231_pre.xml | 399739 | 2018-03-14 08:01:52 |
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| report.css | 2767 | 2018-03-14 08:01:52 |
 secpatent.jpg | 32383 | 2018-03-14 08:01:52 |
| Show.js | 1410 | 2018-03-14 08:01:52 |
 totalreturn.jpg | 39642 | 2018-03-14 08:01:52 |