Gold(I) complexes of the type [AuL{kappaC-2-C(6)H(4)P(S)Ph(2)}] [L = PTA, PPh(3), PPh(2)(C(6)H(4)-3-SO(3)Na) and PPh(2)(2-py)]: Synthesis, characterisation, crystal structures, and In Vitro and In Vivo anticancer properties.