A Study to Assess Contraceptive Efficacy and Safety of Etonogestrel (ENG) Implant Beyond 3 Years of Use (MK-8415-060)

Icahn School of Medicine at Mount Sinai (Site 0155), New York

Columbia Univ. Medical Center (Site 0118), New York

Montefiore Medical Center (Site 0103), The Bronx

University of Pittsburgh - Magee Womens Hospital (Site 0100), Pittsburgh

OB/GYN Associates of Erie (Site 0183), Erie

Johns Hopkins Bayview Medical Center (Site 0225), Baltimore

Tidewater Clinical Research Inc (Site 0162), Norfolk

Eastern Virginia Medical School (Site 0146), Norfolk

Carolina Women's Research and Wellness Center (Site 0154), Durham

Eastern Carolina Women's Center (Site 0159), New Bern

Palmetto Clinical Research (Site 0133), Summerville

Mount Vernon Clinical Research (Site 0111), Sandy Springs

University Of Florida (Site 0144), Jacksonville

Emerald Coast Obstetrics and Gynecology (Site 0203), Panama City

Lenus Research & Medical Group Llc (Site 0102), Sweetwater

Comprehensive Clinical Trials LLC (Site 0101), West Palm Beach

Alabama Clinical Therapeutics (Site 0222), Birmingham

University of Tennessee Medical Center Knoxville (Site 0218), Knoxville

Metro Jackson OBGYN/SKYCRNG (Site 0233), Jackson

The Ohio State University (Site 0176), Columbus

Velocity Clinical Research, Cincinnati (Site 0230), Cincinnati

HWC Women's Research Center (Site 0199), Englewood

Indiana University (Site 0220), Indianapolis

Michigan Medicine (Site 0108), Ann Arbor

Saginaw Valley Medical Research Group, LLC (Site 0198), Saginaw

Planned Parenthood of North Central States (PPNCS) (Site 0113), Minneapolis

Planned Parenthood of Illinois (PPIL) (Site 0200), Chicago

Planned Parenthood of the Saint Louis Region & Southwest Missouri (Site 0158), St Louis

Washington University (Site 0129), St Louis

Cypress Medical Research Center (Site 0226), Wichita

Southern Clinical Research Associates (Site 0219), Metairie

Signature Gyn Services (Site 0201), Fort Worth

Planned Parenthood of the Gulf Coast (Site 0106), Houston

University of Texas Health Science Center (Site 0178), Houston

Advances in Health, Inc. (Site 0209), Pearland

Centex Studies, Inc. (Site 0171), Houston

Gadolin Research (Site 0232), Beaumont

Tekton Research - Floyd Curl Drive (Site 0228), San Antonio

Planned Parenthood of the Rocky Mountains (Site 0196), Denver

Physicians' Research Options, LLC (Site 0166), Lakewood

Comprehensive Womens Health Center (Site 0194), Denver

Rosemark (Site 0177), Idaho Falls

Physicians' Research Options, LLC (Site 0204), Pleasant Grove

JBR Clinical Research (Site 0174), Salt Lake City

Desert Star Family Planning (Site 0193), Phoenix

Precision Trials (Site 0187), Phoenix

Visions Clinical Research Tucson (Site 0134), Tucson

Albuquerque Clinical Trials (Site 0210), Albuquerque

Bosque Women's Care (Site 0211), Albuquerque

Office of Edmond Pack, MD (Site 0168), Las Vegas

Essential Access Health (Site 0163), Los Angeles

Matrix Clinical Research Inc (Site 0105), Los Angeles

University of California Los Angeles (Site 0119), Los Angeles

Stanford University (Site 0112), Stanford

University of California, Davis (Site 0124), Sacramento

Oregon Health Sciences University Hospital (Site 0128), Portland

Seattle Women's: Health, Research, Gynecology (Site 0149), Seattle

Planned Parenthood Great Northwest, Hawai'i, Alaska, Indiana, Kentucky (Site 0110), Seattle

Multicare Health System Institute for Research and Innovation (Site 0188), Cheney

North Spokane Women's Clinic (Site 0137), Spokane

McFarland Clinic, PC (Site 0217), Ames

Boston University Medical Center (Site 0167), Boston

Planned Parenthood League of Massachusetts (Site 0135), Boston

Capital Health OB/GYN- Lawrenceville (Site 0190), Lawrenceville

Advance Medical Concept PSC (Site 0313), Cidra

Clinical Research Puerto Rico Inc (Site 0302), San Juan

FDI Clinical Research (Site 0305), San Juan