function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amún, Cristian & Claps, Lucía E.', 1],
    ['Caballero, Alejandro & Ramos-Portilla, Andrea Amalia', 1],
    ['Fornazier, M. J. & Martins, D. S. & Fanton, C. J.', 1],
    ['Fullaway, D. T.', 1],
    ['Mifsud, David & Mazzeo, Gaetana & Russo, Agatino', 1],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 2],
    ['Moghaddam, Masumeh', 2],
    ['Novoa, Nereida Mestre & Hamon, Avas & Evans, Greg', 2],
    ['Stalažs, Arturs', 1],
    ['Suh, Soo-Jung', 4],
    ['Suh, Soo-Jung & Bombay, Khanxay', 1],
    ['Suh, Soo-Jung & Hyun, Ik-Hwa', 2],
    ['Williams, Douglas J. & Ben-Dov, Yair', 1],
    ['dos, Vera Regina & Wolff, Santos', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);