[4] He received his MBChB in 1968, became the first native student from Brunei Town, Borneo to attend the University of Glasgow and graduate.

[6] Johar was appointed as the health minister on 20 October 1986, succeeding Pehin Dato Abdul Aziz.

[9] On 1 May 1995, the Committee on Nominations, made up of representatives from the World Health Organization (WHO) member states, convened.

[13] Johar's children included; Sofian (Head of Electrophysiology at the Gleneagles JPMC and President of the Cardiac Society Brunei Darussalam)[14][15] and Johan (Chief Corporate Strategy Officer with Brunei LNG).

[16] On 15 November 2007, Sultan Hassanal Bolkiah gave 27 founders outstanding recognition awards, and individuals who had made significant contributions to Brunei's healthcare system—including Dato Johar—were honored during the event.