1. Use of carnitine therapy in selected cases of male factor infertility: a double-blind crossover trial 
Andrea Lenzi, M.D., Francesco Lombardo, Ph.D., Paolo Sgrò, M.D., Pietro Salacone, M.D., Luisa Caponecchia, B.Sc., Franco Dondero, M.D., Loredana Gandini, B.Sc. 
Fertility and Sterility 
Volume 79, Issue 2, Pages (February 2003)
DOI: /S (02)

2. FIGURE 1
Diagram of difference (Δ) in absolute values expressed in millions of total motile sperm/mL from the beginning (base) to the end of the L-carnitine therapy (line with diamonds) and placebo (line with circles) cycles. Values are mean ± SD (P = .008).
Lenzi. L-carnitine therapy in male factor infertility. Fertil Steril 2003.
Fertility and Sterility  , DOI: ( /S (02) )

3. FIGURE 2
Diagram of difference (Δ) in absolute values expressed in millions of forward motile sperm/mL from the beginning (base) to the end of the L-carnitine therapy (line with diamonds) and placebo (line with circles) cycles. Values are mean ± SD (P = .006).
Lenzi. L-carnitine therapy in male factor infertility. Fertil Steril 2003.
Fertility and Sterility  , DOI: ( /S (02) )