Study: NCT03043339

Intervention type: OTHER
Intervention: Stool Specimen Collection
Description: Participants will provide a stool sample at baseline (pre-operation) and 30 days after the transplant operation. Stool specimens will be self-collected by the participant.

Intervention type: OTHER
Intervention: Stool Specimen Collection
Description: Participants will provide a stool sample at baseline (pre-operation) and 30 days after the transplant operation. Stool specimens will be self-collected by the participant.

Intervention type: OTHER
Intervention: Anal Swab Sampling
Description: Anal swabs will be collected prior to surgery (baseline) and at post-operation days 2, 15, and 30. Participants whose planned hospitalization duration is extended from the pre-surgical plan will have an additional, optional, anal swab collected 2 days prior to their anticipated hospital discharge date. Anal swabs will be collected by the study team, except for the standard of care post-operative appointment (30 days after the operation) for the living donors who will collect their own samples.

Intervention type: OTHER
Intervention: Anal Swab Sampling
Description: Anal swabs will be collected prior to surgery (baseline) and at post-operation days 2, 15, and 30. Participants whose planned hospitalization duration is extended from the pre-surgical plan will have an additional, optional, anal swab collected 2 days prior to their anticipated hospital discharge date. Anal swabs will be collected by the study team, except for the standard of care post-operative appointment (30 days after the operation) for the living donors who will collect their own samples.

Intervention type: OTHER
Intervention: Short Diet Assessment (SDA)
Description: The study coordinator will administer the Short Diet Assessment (SDA) to participants prior to surgery at baseline and post-operation days 2, 15, and 30. Participants whose planned hospital length of stay is extended from the pre-surgical plan will complete the questionnaire 2 days prior to their anticipated hospital discharge date.

Intervention type: OTHER
Intervention: Short Diet Assessment (SDA)
Description: The study coordinator will administer the Short Diet Assessment (SDA) to participants prior to surgery at baseline and post-operation days 2, 15, and 30. Participants whose planned hospital length of stay is extended from the pre-surgical plan will complete the questionnaire 2 days prior to their anticipated hospital discharge date.

Intervention type: OTHER
Intervention: NHANES Dietary Screener Questionnaire (DSQ)
Description: The National Health and Nutrition Examination Survey (NHANES) 2009-2010 Dietary Screener Questionnaire will be completed on Post-Operative Day 2. The questionnaire asks about foods consumed during the past 30 days. There are 25 items on the questionnaire and additional questions may be asked depending on responses provided. The questionnaire will be self-administered or administered by a study team member.

Intervention type: OTHER
Intervention: NHANES Dietary Screener Questionnaire (DSQ)
Description: The National Health and Nutrition Examination Survey (NHANES) 2009-2010 Dietary Screener Questionnaire will be completed on Post-Operative Day 2. The questionnaire asks about foods consumed during the past 30 days. There are 25 items on the questionnaire and additional questions may be asked depending on responses provided. The questionnaire will be self-administered or administered by a study team member.