Table 1. Largest reported case series of robotic PDs published to date.

Author	Year	Country	Study type	No. of patients	Malignancy [%]	Comparison (No. of patients compared)
Buchs (26)	2011	USA	Prospective, case-matched study	44	33 [75]	Open PD [39]
Chalikonda (27)	2012	USA	Prospective, case-matched study	30	14 [46.7]	Open PD [30]
Zhou (28)	2011	China	Prospective, case matched study	8	8 [100]	Open PD [8]
Giulianotti (22)	2010	USA	Retrospective, case series	20	20 [100]	None
Zeh (29)	2012	USA	Retrospective, case series	50	37 [74]	None
Boggi (30)	2013	Italy	Retrospective, case series	34	22 [64.7]	None
Lai (31)	2012	China	Retrospective, case series	20	15 [75]	Open PD [67]
Narula (24)	2010	USA	Retrospective, case series	5	1 [20]	None

PD, pancreaticoduodenectomy.