Here is an excerpt from a paper that studies the impact of capital flows on investment in a panel dataset of 22 transition countries for 10 years (1995 - 2004).

Arellano-Bond dynamic panel-data estimation, one-step difference GMM results Group variable: ctry dum Number of obs 165 Time variable : year Number of groups = 22 Number of instruments = 39 obs per group: min = 3 F (8, 157) 11 6. 88 avg = 7.50 Prob > F = 0. 000 max = 8 Coef. Std. Err. t P>Itl [95% Conf. Interval] inv L1 . . 2922856 . 111738 2 . 62 0 . 010 . 0715819 . 5129893 fdi . 5202847 . 2094545 2. 48 0 . 014 . 1065725 . 933997 loans . 2789421 . 1638248 1.70 0 . 091 -. 044643 . 6025271 portfolio -. 0086876 . 3376843 -0.03 0. 980 -. 6756779 . 6583028 growth L1 . . 1167961 . 0555715 2. 10 0. 037 . 0070319 . 2265604 uncert . 0397982 . 0673439 0. 59 0 . 555 - . 0932187 . 172815 tot . 9193659 1 . 916147 0. 48 0 . 632 -2. 865388 4. 704119 dev m2 | . 0443079 . 0760188 0 . 58 0 . 561 -. 1058435 . 1944594 Sargan test of overid. restrictions: chil (31) = 36.42 Prob > chil = 0.231 Arellano-Bond test for AR(1) in first differences: z = -0.01 Pr > z = 0.992 Arellano-Bond test for AR(2) in first differences: z = -0. 48 Pr > z = 0 . 628