function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baranov, Viktor & Kvifte, Gunnar Mikalsen', 1],
    ['Chamutiová, Tímea & Hamerlík, Ladislav & Bitušík, Peter', 1],
    ['Chertoprud, Mikhail V. & Palatov, Dmitry M.', 1],
    ['HAYWARD, PETER J. & McKINNEY, FRANK K.', 1],
    ['Johannse, O. A.', 1],
    ['Leader, John P.', 2],
    ['Magoga, Giulia & Montagna, Matteo & Marziali, Laura', 1],
    ['Makarchenko, Eugenyi A. & Semenchenko, Alexander A.', 1],
    ['Saether, Ole A.', 1],
    ['Saether, Ole A. & Andersen, Trond', 1],
    ['Tasdemir, Ayse & Akyildiz, Gurcay Kivanc', 1],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 5],
    ['Yamamoto, Nao & Yamamoto, Masaru', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);