function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 1],
    ['Chamutiová, Tímea & Hamerlík, Ladislav & Bitušík, Peter', 2],
    ['Ivkovic, Marija & Doric, Valentina & Baranov, Viktor', 2],
    ['Krasheninnikov, Andrey B. & Przhiboro, Andrey A.', 2],
    ['Krasheninnikov, Andrey B. & Tanadbaeva, Dana A.', 1],
    ['Magoga, Giulia & Montagna, Matteo & Marziali, Laura', 1],
    ['Makarchenko, Eugenyi A. & Makarchenko, Marina A.', 7],
    ['Moubayed, Joel & Langton, Peter H', 18],
    ['Moubayed-Breil, Joel & Lods-Crozet, Brigitte', 6],
    ['Namayandeh, Armin & Bilyj, Bohdan & Beresford, David V.', 1],
    ['Rossaro, Bruno & Magoga, Giulia & Montagna, Matteo', 4],
    ['Saether, Ole A.', 3],
    ['Stur, Elisabeth & Spies, Martin', 3],
    ['Tasdemir, Ayse & Akyildiz, Gurcay Kivanc', 5],
    ['Yamamoto, Nao & Yamamoto, Masaru', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    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);