function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Kandari, Manal Abdulrahman & Khalaji-Pirbalouty, Valiallah', 1],
    ['Choudhury, Madhumita & Doti, Brenda L. & Brandt, Angelika', 2],
    ['Diaz, Analía R. & Álvarez, Victor Hugo Merlo', 1],
    ['Doti, Brenda L. & Roccatagliata, Daniel', 7],
    ['Doti, Brenda Lía & Choudhury, Madhumita & Brandt, Angelika', 3],
    ['Doti, Brenda Lía & Roccatagliata, Daniel', 4],
    ['Gamô, Sigeo', 1],
    ['Just, Jean', 20],
    ['Just, Jean & Wilson, George D. F.', 49],
    ['Kaiser, Stefanie & Marner, Michael', 1],
    ['Menzies, Robert J.', 1],
    ['Shimomura, M & Mawatari, SF', 6],
    ['Shimomura, Michitaka', 10],
    ['Shimomura, Michitaka & Mawatari, Shunsuke F.', 4],
    ['Winkler, Holger', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=111)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);