"That's my most important stage race victory", Kwiatkowski was quoted as saying by cyclingnews.com.
He added: "I tried a couple of stages ago but I came second".
Team Sky's Michal Kwiatkowski pictured after winning the Tirreno-Adriatico in Italy today.
Kittel's other stage win was for the sprinters on Thursday. Kittel edged Peter Sagan, who had been held up by a crash with about seven kilometers left of the 153-kilometer sixth stage from Numana to Fano.
Researchers attribute 250K annual CVD deaths in U.S. to lead exposure
After an average of 19.3 years, 4,422 people died including 1,801 from cardiovascular disease and 988 from heart disease. Lead exposure is linked to high blood pressure , hardening of the arteries and ischemic (coronary) heart disease.
If you were looking for the unluckiest rider in the professional peloton, then you'd be hard-pressed to find a less fortunate rider than Geraint Thomas.
"The guys were absolutely brilliant today and we went in with a plan that was executed perfectly, they really ramped the pace up on the closing circuit and dropped me off in a great position on the climb".
Chris Froome, who was out of the running in the GC standings after a number of mechanical issues during the week, finished in the same time as team-mate Kwiatkowski.
With Porte ill, Van Garderen at Paris-Nice (where he abandoned on stage one after crashing into a car), and Dennis seemingly short of form despite focusing on the Giro this year, Caruso seized his opportunity with a strong second place finish overall.