This is the first step to networking. The next step is keeping track of your contacts and reinforcing your interactions with them. Do not interact once and expect a job to materialise five years later, it might, but that would be unusual. Your contacts should be re-contacted periodically and your network needs to be updated and enlarged constantly. You don't have to go out of your way to do this.
National meetings are a good forum to renew many contacts on a regular basis.
Anyway, there is quite a bit of information about networking around. The College of Graduate Studies Careers Library on the 6th floor of the Clinical Sciences Building has several books which cover aspects of networking. You may get lucky with this strategy, eventually, but you are also likely to become demoralized and depressed after the string of rejections gets longer and longer. An old room-mate of mine, with degrees in geology, always found his jobs this way. If you're going to try cold-calling, then do your homework first.