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| 0001564590-19-018021-index.html | 2019-05-09 16:21:40 | |
| 0001564590-19-018021.txt | 2019-05-09 16:21:40 | |
 0001564590-19-018021-xbrl.zip | 180798 | 2019-05-09 16:21:40 |
| FilingSummary.xml | 29598 | 2019-05-09 16:21:40 |
| Financial_Report.xlsx | 72973 | 2019-05-09 16:21:40 |
| hsdt-10q_20190331.htm | 2027548 | 2019-05-09 16:21:40 |
| hsdt-20190331.xml | 3044526 | 2019-05-09 16:21:40 |
| hsdt-20190331.xsd | 61551 | 2019-05-09 16:21:40 |
| hsdt-20190331_cal.xml | 49607 | 2019-05-09 16:21:40 |
| hsdt-20190331_def.xml | 207557 | 2019-05-09 16:21:40 |
| hsdt-20190331_lab.xml | 487500 | 2019-05-09 16:21:40 |
| hsdt-20190331_pre.xml | 365315 | 2019-05-09 16:21:40 |
| hsdt-ex311_10.htm | 9371 | 2019-05-09 16:21:40 |
| hsdt-ex312_11.htm | 10213 | 2019-05-09 16:21:40 |
| hsdt-ex321_12.htm | 6497 | 2019-05-09 16:21:40 |
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| report.css | 2767 | 2019-05-09 16:21:40 |
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