Complementary IGFETs are fabricated so that the body dopant concentration in each IGFET decreases by at least 10 in moving from a subsurface location in the body material of that IGFET up to one of its sourcedrain zones. The method can include establishing a content browsing session between a first computing device and a content server serving access to content to the first computing device and maintaining state data for the content browsing session. A scheme is also disclosed for dynamically estimating the available network bandwidth for streaming of objects, such as MPEG4 multiple video objects, in conjunction with the MSTFP protocol. The device can also include provisions for removing a protective cap from the vial and for removing a protective cover from the syringe needle.