I have my own techniques for job interviewing, and I'll share with you one thing I do. After a job interview, that same day, I'll type out in business form a letter thanking the person by name for the interview, and reiterating that he or she should feel free to contact me at any time, and reiterate my contact information (address, email addy, phone number, pager, voice mail-- that same info that's on the cover letter to the resume).
I never telephone or email...the thank you is always in writing via the U.S. mail. The thank you letter is short, sweet and to the point, and very professional...no embellishments, cute "thank you" letterhead, colored paper or anything.
If there was an interesting point in the interview, I may mention that in the letter, for example something the company is proud of or a recent accomplishment of the company's such as, "I thoroughly enjoyed the tour of your department's new fast track, what an exciting opportunity to serve the community by providing such a well-needed service."-- but I will limit the thank you letter to one interesting point only, and I keep the tone very optimistic and show my enthusiasm for the field.
I then mail it that day, before the last mail pickup arrives, or if the interview was late in the afternoon, mail it first thing in the morning....I want the letter to arrive very quickly, to give the impression of staying on top of things and also again show that enthusiasm and optimism (and also arrive before final decisions are made). Be sure to include your interviewer's complete title, such as Jane Doe, MD, Medical Director, Happy Patients Memorial Center.
If I were interviewed by three people, I will send each a letter thanking them for the opportunity to interview with such a progressive, accomplished, service-oriented, community-oriented (or other descriptive that was obviously important to the interviewer or the company) company. So far in my experience, this has made an extremely good impression.
I know that many books about job interviewing talk about the written thank you as proper etiquette, but in my years of work experience, I have yet to have seen a single one- I believe the impact that it can have is a bit underestimated by many job hunters-- and I feel it can really distinguish you from the rest of the crowd. Same goes for a great cover letter- short, sweet, professional but conveying that enthusiasm for your field of work.
In your case, I agree with the previous poster that you should not email or call at this point. I would recommend a thank you letter, leaving the ball in their court that they may contact you at any time.