function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abarca-Ávila, Mónica Mariel & Herrera-Dorantes, María Teresa', 6],
    ['Bochert, Ralf', 1],
    ['Băcescu, Mihai', 1],
    ['Heard, Richard W. & Stępień, Anna & Drumm, David T.', 7],
    ['Jakiel, Aleksandra & Stępień, Anna & Jóźwiak, Piotr', 1],
    ['Kakui, Keiichi & Nakano, Takafumi', 1],
    ['Larsen, Kim', 1],
    ['Morales-Núñez, Andrés G. & Heard, Richard W. & Bird, Graham J.', 7],
    ['Moralés-Núñez, Andres G. & Heard, Richard W.', 7],
    ['Ritger, Rebecca Kirk & Heard, Richard W.', 2],
    ['Segadilha, Juliana Lopes & Serejo, Cristiana Silveira', 2],
    ['Stępień, Anna & Błażewicz-Paszkowycz, Magdalena', 9],
    ['Tanaka, Masaatsu & Kakui, Keiichi', 2],
    ['Tzeng, You-Wei & Hsueh, Pan-Wen', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);