function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['CHATTERJEE, TAPAS & KOTOV, ALEXEY A. & DAMME, KAY VAN', 9],
    ['Dadykin, Ivan A. & Sinev, Artem Y. & Gu, Yangliang', 3],
    ['Elías-Gutiérrez, Manuel & Jerónimo, Fernando Martínez', 1],
    ['Kotov, Alexey A. & Ferrari, Frank D.', 1],
    ['Kotov, Alexey A. & Jeong, Hyun Gi & Lee, Wonchoel', 1],
    ['Macêdo, Rafael Lacerda & Sousa, Francisco Diogo R.', 2],
    ['Novichkova, Anna', 2],
    ['Santos, Arielly De S. & Andrade, Daniel Da S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);