function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Benjamin, Suresh P.', 1],
    ['Li, Cong-zheng & Yao, Yan-bin & Xiao, Yong-hong & Liu, Ke-ke', 3],
    ['Liu, Ke-Ke & Ying, Yuan-hao & Fomichev, Alexander A.', 2],
    ['Machado, Miguel & Previato, Thales & Grismado, Cristian J.', 1],
    ['Machado, Miguel & Teixeira, Renato Augusto & Milledge, Graham A.', 23],
    ['Machado, Miguel & Viecelli, Rafaela & Guzati, Catherine', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);