function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Zhi-Teng', 15],
    ['Chen, Zhi-Teng & Du, Yu-Zhou', 18],
    ['Chen, Zhi-Teng & Wang, Bo', 14],
    ['DeWalt, R. Edward & Grubbs, Scott A.', 21],
    ['Froehlich, Claudio G.', 23],
    ['Gonçalves, Maísa De Carvalho & Novaes, Marcos Carneiro', 18],
    ['Novaes, Marcos Carneiro & Bispo, Pitágoras Da Conceição', 29],
    ['Ribeiro, José Moacir Ferreira & Rafael, José Albertino', 15],
    ['Sivec, Ignac & Stark, Bill P.', 58],
    ['Stark, Bill P.', 54],
    ['Stark, Bill P. & Baumann, Richard W.', 25],
    ['Stark, Bill P. & Sivec, Ignac', 118],
    ['Stark, Bill P. & Zúñiga, Maria del Carmen', 16],
    ['Zwick, Peter & Zwick, Andreas', 225],
    ['Zúñiga, Maria del Carmen & Stark, Bill P. & Cardona, William', 32],
    ['Other (158)', 657]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=1338)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);