function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Banks, Nathan', 5],
    ['Breitkreuz, Laura C V & Garzón-Orduña, Ivonne J', 1],
    ['Canbulat, Savaş', 1],
    ['ENGEL, MICHAEL S. & GRIMALDI, DAVID A.', 2],
    ['Hassan, Muhammad Asghar & Liu, Xingyue', 7],
    ['Hassan, Muhammad Asghar & Oswald, John D. & Zia, Ahmed', 7],
    ['Leach, William Elford', 1],
    ['Makarkin, V. N. & Solodovnikov, A. Yu. & Shchurov, V. I.', 6],
    ['McLachlan, Robert', 1],
    ['Penny, Norman D. & Tauber, Catherine A. & de Leon, Teresa', 1],
    ['Peter Duelli & Christian Monnerat & Bärbel Koch', 2],
    ['Serediuk, H. V.', 2],
    ['Tillier, Pierre', 3],
    ['Walker, Francis', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=42)',
    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);