BID SUPPLEMENT 2019 Supplemental Bid Bulletin No. 2019-02 (Amendment in the Lot No.12 to 44 and Clarification of the BDS 28.3 (a)) Supplemental Bid Bulletin No. 2019-03 (Amendment for the Item Nos.38, 54, 59 and 101 and Clarification of the BDS 28.3(a)) Supplemental Bid Bulletin No. 2019-04 (Amendment for the Item Nos.1, 49, 54, 71, 72, 73, 88, 92, 116, 118, 158, 164, 165, 180, 181 and 83) Supplemental Bid Bulletin No. 2019-05 (Amendment and Clarifications of the Technical Specification-Procurement of Ultrasound Machine) Supplemental Bid Bulletin No. 2019-06 (Amendment and Clarifications of the Technical Specification-Procurement of Ultrasound Machine)