function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akrami, Mohammad Ali', 1],
    ['Bayartogtokh, Badamdorj & Akrami, Mohammad Ali', 1],
    ['Ebrahimi, Forough & A, Mohammad', 2],
    ['Ermilov, Sergey G. & Anichkin, Alexander E.', 2],
    ['Ermilov, Sergey G. & Bayartogtokh, Badamdorj', 2],
    ['Ermilov, Sergey G. & Klimov, Pavel B.', 3],
    ['Ermilov, Sergey G. & Martens, Jochen', 1],
    ['Ermilov, Sergey G. & Sandmann, Dorothee & Klarner, Bernhard', 2],
    ['Ermilov, Sergey G. & Starý, Josef', 1],
    ['Ermilov, Sergey G. & Starý, Josef & Sandmann, Dorothee', 1],
    ['Ermilov, Sergey G. & Tolstikov, Andrei V.', 1],
    ['Liang, W. Q. & Yang, M. F.', 1],
    ['Oliveira, Anibal R. & Argolo, Poliane S. & De, Gilberto J.', 2],
    ['Revelo-Tobar, Harol', 3],
    ['Weigmann, G. & Miko, L.', 2],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    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);