function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akita, Katsumi & Masumoto, Kimio', 1],
    ['Barševskis, Arvīds & Janovska, Marina & Aksjuta, Kristīna', 2],
    ['Blair, K. G.', 1],
    ['Gebien, Hans', 1],
    ['Graf, Roman & Szallies, Alexander', 1],
    ['Hegde, V. D.', 2],
    ['Liu, Shan-Shan & Li, Xiu-Min & Ren, Guo-Dong', 1],
    ['Liu, Shanshan & Ren, Guodong', 3],
    ['Niu, Yiping & Ren, Guodong & Liu, Shanshan', 1],
    ['Soldati, Laurent & Kergoat, Gael J. & Clamens, Anne-Laure', 10],
    ['Soldati, Laurent & Kergoat, Gael J. & Condamine, Fabien L.', 1],
    ['Stefanelli, Silvia & Della Rocca, Francesca & Bogliani, Giuseppe', 2],
    ['Swezey, O. H.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);