1 Gauderer MWL, Ponskv JL, Izant RJ Jr. Gastrostomy without laparotomy: a percutaneous endoscopic technique. J Pediatr Surg 1980;15:872-5. 2 Ponsky JL, Gauderer MW, Stellato TA. Percutaneous endoscopic gastrostomy: a review of 150 cases. Arch Surg 1983;118:913-4. 3 Kirby DF, Craig RM, Tsang T-K, Plotnick BH. Percutaneous endoscopic gastrostomies: a prospective evaluation and review of the liter...

What is the nature of the association between age (7-11 years) and performance on mathematical equivalence problems (e.g., 7+4+5+7+_)? Many prevailing theories suggest that there should be a positive association. However, change-resistance accounts (e.g., N. M. McNeil & M. W. Alibali, 2005b) predict a U-shaped association. The purpose of the present research was to test these differing predicti...

dotracheal tube and are composed of inspiratory and expiratory corrugated limbs. The two breathing tubes carry respiratory gases with volatile anesthetics to and from patients during general anesthesia. Although longer corrugated breathing tubes allow the anesthesia machine to be located farther from the patients, they are so long and flexible that they tend to hang down below the operating tab...

Four new Paramphimonhystrella species are described from the continental slope of New Zealand. P. glossalga n. sp. is characterised by presence of twelve lips, large buccal cavity, males with short, heavily cuticularised spicules joined distally, and females with large postvulvar sac and hammer-shaped cuticularised piece immediately posterior to vagina. P. barbula n. sp. is characterised by nar...