function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abarca-Ávila, Mónica Mariel & Herrera-Dorantes, María Teresa', 1],
    ['Bamber, Roger N.', 13],
    ['Błażewicz-Paszkowycz, Magdalena & Bamber, Roger N', 4],
    ['Drumm, David T. & Heard, Richard W.', 5],
    ['Hansknecht, Tom & Heard, Richard W. & Martin, Joel W.', 3],
    ['Heard, Richard W. & Morales-Núñez, Andrés G.', 2],
    ['Kakui, Keiichi & Angsupanich, Saowapa', 6],
    ['Larsen, Kim & Shimomura, Michitaka', 5],
    ['Marin, Ivan & Palatov, Dmitry & Th ịnh, Nguy ễn Văn', 2],
    ['Morales-Nunez, Andres G. & Ulrich, Sterling & Heard, Richard W.', 2],
    ['Morales-Núñez, Andrés G. & Heard, Richard W. & Alfaro, Mónica', 2],
    ['Schminke, Horst Kurt', 1],
    ['Stępień, Anna & Blazewicz-Paszkowycz, Magdalena', 3],
    ['Tanaka, Masaatsu & Kakui, Keiichi', 1],
    ['Tzeng, You-Wei & Ma, Lin & Li, Xinzheng', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=51)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);