function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amún, Cristian & Claps, Lucía E.', 2],
    ['Banks, Charles S.', 1],
    ['Fullaway, D. T.', 2],
    ['Kondo, Takumasa & Muñoz, Jazmín Adriana', 1],
    ['Lázaro-Castellanos, Carlos & González-Hernández, Héctor', 1],
    ['Mifsud, David & Mazzeo, Gaetana & Russo, Agatino', 2],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 3],
    ['Moghaddam, Masumeh', 2],
    ['Novoa, Nereida Mestre & Hamon, Avas & Evans, Greg', 2],
    ['Smith-Pardo, Allan H. & Evans, Gregory A. & Dooley, John W.', 3],
    ['Stalažs, Arturs', 1],
    ['Suh, Soo-Jung & Bombay, Khanxay', 2],
    ['Suh, Soo-Jung & Hyun, Ik-Hwa', 1],
    ['Williams, Douglas J. & Ben-Dov, Yair', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    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);