Chief medical officer's log, Deep Space 9
The chief medical officer's log of  Deep Space 9 was the method that Julian Bashir used to note events of a medical nature he participated in.

Entries

2370 
Elimination of the harvesters. ()
 "Chief Medical Officer's Log, supplemental. Chief O'Brien and I are on board a T'Lani cruiser helping the T'Lani and the Kelleruns eliminate their stockpiles of harvesters – deadly biomechanical gene disrupters used by both sides in their centuries-long war."

2372 
Mission to Merik III. ()
 "Chief Medical Officer's Log, Stardate 49066.5. Chief O'Brien and I have concluded our bio-survey of Merik III in the Gamma Quadrant. We are on course back to the wormhole and should arrive at the station two days ahead of schedule."

2375 
Investigation of morphogenic virus. ()

 "Chief Medical Officer's Log, Stardate 52645.7. Colonel Kira, Garak and Odo have returned to the station. Despite my best efforts, I have yet to make any progress toward finding a cure for Odo's disease. "

Medical officer's log, Deep Space 9
Deep Space 9, officer's log