Family Practice Notebook - quick answers (like eMedicine) http://www.fpnotebook.com
ACP-ASIM http://www.acponline.org/srf/smc.htm#CriticalCareMedicine
Critical Care full text from PubMed http://www.pubmedcentral.nih.gov/tocrender.fcgi?journal=9
NEJM Critical Care articles http://content.nejm.org/cgi/collection/critical_care
SBH Internal Medicine Housestaff Manual http://bar-mis3/Housestaff/Housestaff_Frames.htm
Cleveland Clinic - Ventilator Weaning http://www.ccjm.org/pdffiles/Frutos-Vivar503.pdf