Flickr: birchbarksoap​Dr. Sanford Siegal, the so-called "cookie doctor" from Kendall and partner-turned-rival Dr. Sasson Moulavi of Boca Raton have taken their diet war into the pages of the New York Times. Siegal gets more ink, but he also gets the biggest share of skepticism. From the article, headlined "Skin Deep" in yesterday's edition:Critics of cookie diets are not convinced. Weight-loss plans that center around a diet of below 1,000 calories do not, they say, lead to long-lasting weight