Study	Reason for exclusion
Ambrosi 1975	Separate data for patients diagnosed with PAD stage II according to Fontaine were not available.
Baitsch 1986	This study compares Ginkgo biloba extract with dextran in patients with PAD stage IV according to Fontaine.
Berndt 1987	Ginkgo biloba extract is compared with buflomedil.
Bohmer 1988	(According to Fontaine), diagnosed for more than 1 year.
Courbier 1977	Separate data for patients diagnosed with PAD stage II according to Fontaine were not available.
Frileux 1975	Separate data for patients diagnosed with PAD stage II according to Fontaine were not available.
Garzya 1981	Separate data for patients diagnosed with PAD stage II according to Fontaine were not available.
Horsch 1998	Ginkgo biloba extract is compared with naftidrofuryl in patients with PAD stage III and IV according to Fontaine.
Li 1998	Primary aim of this study was to compare diabetic and non‐diabetic PAD patients.
Michelini 1998	This study compares the combination of Ginkgo biloba extract, magnesium and Levo‐arginine with acetylsalicyl acid.
Rudofsky 1987	Double blind randomised cross‐over study evaluating the short term effect (60 minutes) of Ginkgo biloba extract versus placebo in patients with PAD stage II according to Fontaine.
Sandreau 1989	This study only included patients diagnosed with PAD stage III according to Fontaine.
Schweizer 1999	This study compares two dosages of Ginkgo biloba extract without a placebo group.