{Reference Type}: Guideline {Title}: Spontaneous abortion and ectopic pregnancy: Case definition & guidelines for data collection, analysis, and presentation of maternal immunization safety data. {Author}: Rouse CE;Eckert LO;Babarinsa I;Fay E;Gupta M;Harrison MS;Kawai AT;Kharbanda EO;Kucuku M;Meller L;Mallett Moore T;Subelj M;Kochhar S;Tavares-Da-Silva F; ; ; {Journal}: Vaccine {Volume}: 35 {Issue}: 48 {Year}: 12 2017 4 {Factor}: 4.169 {DOI}: 10.1016/j.vaccine.2017.01.047