function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anichtchenko, Alexander', 1],
    ['Anichtchenko, Alexander V. & Shavrin, Alexey V.', 1],
    ['Azadbakhsh, Saeed & Nozari, Jamasb', 1],
    ['Barševskis, Arvīds & Janovska, Marina & Aksjuta, Kristīna', 5],
    ['Bousquet, Yves', 17],
    ['Della Rocca, Francesca & Stefanelli, Silvia & Cardarelli, Elisa', 1],
    ['Erwin, Terry L. & Ball, George E.', 2],
    ['Guéorguiev, B.', 5],
    ['Hoess, René', 4],
    ['Hristovski, Slavčo & Guéorguiev, Borislav', 6],
    ['Kostova, Rumyana & Gueorguiev, Borislav', 8],
    ['Pilon, Nicola & Cardarelli, Elisa & Bogliani, Giuseppe', 4],
    ['Ruchin, Alexaner B. & Egorov, Leonid V. & Alekseev, Sergei K.', 3],
    ['Teofilova, Teodora', 3],
    ['Wrase, DW', 3],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=66)',
    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);